import java.io.IOException;
import java.io.InputStream;
import java.util.*;

// Pair class
class Pair<U, V>
{
    public final U first;   	// first field of a Pair
    public final V second;  	// second field of a Pair

    // Constructs a new Pair with specified values
    public Pair(U first, V second)
    {
        this.first = first;
        this.second = second;
    }

    @Override
    // Checks specified object is "equal to" current object or not
    public boolean equals(Object o)
    {
        if (this == o)
            return true;

        if (o == null || getClass() != o.getClass())
            return false;

        Pair<?, ?> pair = (Pair<?, ?>) o;

        // call equals() method of the underlying objects
        if (!first.equals(pair.first))
            return false;
        return second.equals(pair.second);
    }

    @Override
    // Computes hash code for an object to support hash tables
    public int hashCode()
    {
        // use hash codes of the underlying objects
        return 31 * first.hashCode() + second.hashCode();
    }

    @Override
    public String toString()
    {
        return "(" + first + ", " + second + ")";
    }

    // Factory method for creating a Typed Pair immutable instance
    public static <U, V> Pair<U, V> of(U a, V b)
    {
        // calls private constructor
        return new Pair<>(a, b);
    }
}

public class Main {

    public static void main(String[] args) {
        FastScanner fs = new FastScanner();
        int N = fs.nextInt();
        int D = fs.nextInt();

        List<Pair<Long, Long>> list = new ArrayList<>();
        for (int i = 0; i < N; ++i) {
            list.add(new Pair<>(fs.nextLong(), fs.nextLong()));
        }

        int ans = 0;
        for (int i = 0; i < N; ++i) {
            Pair<Long, Long> p = list.get(i);
            if (Math.sqrt(p.first * p.first + p.second * p.second) <= D) ++ans;
        }

        System.out.println(ans);
    }
}

class FastScanner {
    private final InputStream in = System.in;
    private final byte[] buffer = new byte[1024];
    private int ptr = 0;
    private int buflen = 0;

    private boolean hasNextByte() {
        if (ptr < buflen) {
            return true;
        }else{
            ptr = 0;
            try {
                buflen = in.read(buffer);
            } catch (IOException e) {
                e.printStackTrace();
            }
            if (buflen <= 0) {
                return false;
            }
        }
        return true;
    }

    private int readByte() { if (hasNextByte()) return buffer[ptr++]; else return -1;}
    private static boolean isPrintableChar(int c) { return 33 <= c && c <= 126;}
    public boolean hasNext() { while(hasNextByte() && !isPrintableChar(buffer[ptr])) ptr++; return hasNextByte();}

    public String next() {
        if (!hasNext()) throw new NoSuchElementException();
        StringBuilder sb = new StringBuilder();
        int b = readByte();
        while(isPrintableChar(b)) {
            sb.appendCodePoint(b);
            b = readByte();
        }
        return sb.toString();
    }

    public long nextLong() {
        if (!hasNext()) throw new NoSuchElementException();
        long n = 0;
        boolean minus = false;
        int b = readByte();
        if (b == '-') {
            minus = true;
            b = readByte();
        }
        if (b < '0' || '9' < b) {
            throw new NumberFormatException();
        }
        while(true){
            if ('0' <= b && b <= '9') {
                n *= 10;
                n += b - '0';
            }else if(b == -1 || !isPrintableChar(b)){
                return minus ? -n : n;
            }else{
                throw new NumberFormatException();
            }
            b = readByte();
        }
    }

    public int nextInt() {
        long nl = nextLong();
        if (nl < Integer.MIN_VALUE || nl > Integer.MAX_VALUE) throw new NumberFormatException();
        return (int) nl;
    }

    public double nextDouble() { return Double.parseDouble(next());}
}

 import java.io.IOException; IOException java.io import java.io.InputStream; InputStream java.io import java.util.*; util.* java class Pair<U, V>
{
    public final U first;   	// first field of a Pair
    public final V second;  	// second field of a Pair

    // Constructs a new Pair with specified values
    public Pair(U first, V second)
    {
        this.first = first;
        this.second = second;
    }

    @Override
    // Checks specified object is "equal to" current object or not
    public boolean equals(Object o)
    {
        if (this == o)
            return true;

        if (o == null || getClass() != o.getClass())
            return false;

        Pair<?, ?> pair = (Pair<?, ?>) o;

        // call equals() method of the underlying objects
        if (!first.equals(pair.first))
            return false;
        return second.equals(pair.second);
    }

    @Override
    // Computes hash code for an object to support hash tables
    public int hashCode()
    {
        // use hash codes of the underlying objects
        return 31 * first.hashCode() + second.hashCode();
    }

    @Override
    public String toString()
    {
        return "(" + first + ", " + second + ")";
    }

    // Factory method for creating a Typed Pair immutable instance
    public static <U, V> Pair<U, V> of(U a, V b)
    {
        // calls private constructor
        return new Pair<>(a, b);
    }
} Pair public final U first;   	// first field of a Pair first public final V second;  	// second field of a Pair second // Constructs a new Pair with specified values
    public Pair(U first, V second)
    {
        this.first = first;
        this.second = second;
    } Pair {
        this.first = first;
        this.second = second;
    } this.first = first this.first this this.first first this.second = second this.second this this.second second U first first V second second @Override
    // Checks specified object is "equal to" current object or not
    public boolean equals(Object o)
    {
        if (this == o)
            return true;

        if (o == null || getClass() != o.getClass())
            return false;

        Pair<?, ?> pair = (Pair<?, ?>) o;

        // call equals() method of the underlying objects
        if (!first.equals(pair.first))
            return false;
        return second.equals(pair.second);
    } equals {
        if (this == o)
            return true;

        if (o == null || getClass() != o.getClass())
            return false;

        Pair<?, ?> pair = (Pair<?, ?>) o;

        // call equals() method of the underlying objects
        if (!first.equals(pair.first))
            return false;
        return second.equals(pair.second);
    } if (this == o)
            return true; this == o this o return true; true if (o == null || getClass() != o.getClass())
            return false; o == null || getClass() != o.getClass() o == null o null getClass() != o.getClass() getClass() getClass o.getClass() o.getClass o return false; false Pair<?, ?> pair = (Pair<?, ?>) o; pair (Pair<?, ?>) o if (!first.equals(pair.first))
            return false; !first.equals(pair.first) first.equals(pair.first) first.equals first pair.first pair pair.first return false; false return second.equals(pair.second); second.equals(pair.second) second.equals second pair.second pair pair.second Object o o @Override
    // Computes hash code for an object to support hash tables
    public int hashCode()
    {
        // use hash codes of the underlying objects
        return 31 * first.hashCode() + second.hashCode();
    } hashCode {
        // use hash codes of the underlying objects
        return 31 * first.hashCode() + second.hashCode();
    } return 31 * first.hashCode() + second.hashCode(); 31 * first.hashCode() + second.hashCode() 31 * first.hashCode() 31 first.hashCode() first.hashCode first second.hashCode() second.hashCode second @Override
    public String toString()
    {
        return "(" + first + ", " + second + ")";
    } toString {
        return "(" + first + ", " + second + ")";
    } return "(" + first + ", " + second + ")"; "(" + first + ", " + second + ")" second ", " "(" + first + ", " + second + ")" "(" first ", " second ")" // Factory method for creating a Typed Pair immutable instance
    public static <U, V> Pair<U, V> of(U a, V b)
    {
        // calls private constructor
        return new Pair<>(a, b);
    } of {
        // calls private constructor
        return new Pair<>(a, b);
    } return new Pair<>(a, b); new Pair<>(a, b) U a a V b b public class Main {

    public static void main(String[] args) {
        FastScanner fs = new FastScanner();
        int N = fs.nextInt();
        int D = fs.nextInt();

        List<Pair<Long, Long>> list = new ArrayList<>();
        for (int i = 0; i < N; ++i) {
            list.add(new Pair<>(fs.nextLong(), fs.nextLong()));
        }

        int ans = 0;
        for (int i = 0; i < N; ++i) {
            Pair<Long, Long> p = list.get(i);
            if (Math.sqrt(p.first * p.first + p.second * p.second) <= D) ++ans;
        }

        System.out.println(ans);
    }
} Main public static void main(String[] args) {
        FastScanner fs = new FastScanner();
        int N = fs.nextInt();
        int D = fs.nextInt();

        List<Pair<Long, Long>> list = new ArrayList<>();
        for (int i = 0; i < N; ++i) {
            list.add(new Pair<>(fs.nextLong(), fs.nextLong()));
        }

        int ans = 0;
        for (int i = 0; i < N; ++i) {
            Pair<Long, Long> p = list.get(i);
            if (Math.sqrt(p.first * p.first + p.second * p.second) <= D) ++ans;
        }

        System.out.println(ans);
    } main {
        FastScanner fs = new FastScanner();
        int N = fs.nextInt();
        int D = fs.nextInt();

        List<Pair<Long, Long>> list = new ArrayList<>();
        for (int i = 0; i < N; ++i) {
            list.add(new Pair<>(fs.nextLong(), fs.nextLong()));
        }

        int ans = 0;
        for (int i = 0; i < N; ++i) {
            Pair<Long, Long> p = list.get(i);
            if (Math.sqrt(p.first * p.first + p.second * p.second) <= D) ++ans;
        }

        System.out.println(ans);
    } FastScanner fs = new FastScanner(); fs new FastScanner() int N = fs.nextInt(); N fs.nextInt() fs.nextInt fs int D = fs.nextInt(); D fs.nextInt() fs.nextInt fs List<Pair<Long, Long>> list = new ArrayList<>(); list new ArrayList<>() for (int i = 0; i < N; ++i) {
            list.add(new Pair<>(fs.nextLong(), fs.nextLong()));
        } int i = 0; int i = 0; i 0 i < N i N ++i ++i i {
            list.add(new Pair<>(fs.nextLong(), fs.nextLong()));
        } {
            list.add(new Pair<>(fs.nextLong(), fs.nextLong()));
        } list.add(new Pair<>(fs.nextLong(), fs.nextLong())) list.add list new Pair<>(fs.nextLong(), fs.nextLong()) int ans = 0; ans 0 for (int i = 0; i < N; ++i) {
            Pair<Long, Long> p = list.get(i);
            if (Math.sqrt(p.first * p.first + p.second * p.second) <= D) ++ans;
        } int i = 0; int i = 0; i 0 i < N i N ++i ++i i {
            Pair<Long, Long> p = list.get(i);
            if (Math.sqrt(p.first * p.first + p.second * p.second) <= D) ++ans;
        } {
            Pair<Long, Long> p = list.get(i);
            if (Math.sqrt(p.first * p.first + p.second * p.second) <= D) ++ans;
        } Pair<Long, Long> p = list.get(i); p list.get(i) list.get list i if (Math.sqrt(p.first * p.first + p.second * p.second) <= D) ++ans; Math.sqrt(p.first * p.first + p.second * p.second) <= D Math.sqrt(p.first * p.first + p.second * p.second) Math.sqrt Math p.first * p.first + p.second * p.second p.first * p.first p.first p p.first p.first p p.first p.second * p.second p.second p p.second p.second p p.second D ++ans ans System.out.println(ans) System.out.println System.out System System.out ans String[] args args class FastScanner {
    private final InputStream in = System.in;
    private final byte[] buffer = new byte[1024];
    private int ptr = 0;
    private int buflen = 0;

    private boolean hasNextByte() {
        if (ptr < buflen) {
            return true;
        }else{
            ptr = 0;
            try {
                buflen = in.read(buffer);
            } catch (IOException e) {
                e.printStackTrace();
            }
            if (buflen <= 0) {
                return false;
            }
        }
        return true;
    }

    private int readByte() { if (hasNextByte()) return buffer[ptr++]; else return -1;}
    private static boolean isPrintableChar(int c) { return 33 <= c && c <= 126;}
    public boolean hasNext() { while(hasNextByte() && !isPrintableChar(buffer[ptr])) ptr++; return hasNextByte();}

    public String next() {
        if (!hasNext()) throw new NoSuchElementException();
        StringBuilder sb = new StringBuilder();
        int b = readByte();
        while(isPrintableChar(b)) {
            sb.appendCodePoint(b);
            b = readByte();
        }
        return sb.toString();
    }

    public long nextLong() {
        if (!hasNext()) throw new NoSuchElementException();
        long n = 0;
        boolean minus = false;
        int b = readByte();
        if (b == '-') {
            minus = true;
            b = readByte();
        }
        if (b < '0' || '9' < b) {
            throw new NumberFormatException();
        }
        while(true){
            if ('0' <= b && b <= '9') {
                n *= 10;
                n += b - '0';
            }else if(b == -1 || !isPrintableChar(b)){
                return minus ? -n : n;
            }else{
                throw new NumberFormatException();
            }
            b = readByte();
        }
    }

    public int nextInt() {
        long nl = nextLong();
        if (nl < Integer.MIN_VALUE || nl > Integer.MAX_VALUE) throw new NumberFormatException();
        return (int) nl;
    }

    public double nextDouble() { return Double.parseDouble(next());}
} FastScanner private final InputStream in = System.in; in System.in System System.in private final byte[] buffer = new byte[1024]; buffer new byte[1024] 1024 private int ptr = 0; ptr 0 private int buflen = 0; buflen 0 private boolean hasNextByte() {
        if (ptr < buflen) {
            return true;
        }else{
            ptr = 0;
            try {
                buflen = in.read(buffer);
            } catch (IOException e) {
                e.printStackTrace();
            }
            if (buflen <= 0) {
                return false;
            }
        }
        return true;
    } hasNextByte {
        if (ptr < buflen) {
            return true;
        }else{
            ptr = 0;
            try {
                buflen = in.read(buffer);
            } catch (IOException e) {
                e.printStackTrace();
            }
            if (buflen <= 0) {
                return false;
            }
        }
        return true;
    } if (ptr < buflen) {
            return true;
        }else{
            ptr = 0;
            try {
                buflen = in.read(buffer);
            } catch (IOException e) {
                e.printStackTrace();
            }
            if (buflen <= 0) {
                return false;
            }
        } ptr < buflen ptr buflen {
            return true;
        } return true; true {
            ptr = 0;
            try {
                buflen = in.read(buffer);
            } catch (IOException e) {
                e.printStackTrace();
            }
            if (buflen <= 0) {
                return false;
            }
        } ptr = 0 ptr 0 try {
                buflen = in.read(buffer);
            } catch (IOException e) {
                e.printStackTrace();
            } catch (IOException e) {
                e.printStackTrace();
            } IOException e {
                e.printStackTrace();
            } e.printStackTrace() e.printStackTrace e {
                buflen = in.read(buffer);
            } buflen = in.read(buffer) buflen in.read(buffer) in.read in buffer if (buflen <= 0) {
                return false;
            } buflen <= 0 buflen 0 {
                return false;
            } return false; false return true; true private int readByte() { if (hasNextByte()) return buffer[ptr++]; else return -1;} readByte { if (hasNextByte()) return buffer[ptr++]; else return -1;} if (hasNextByte()) return buffer[ptr++]; else return -1; hasNextByte() hasNextByte return buffer[ptr++]; buffer[ptr++] buffer ptr++ ptr return -1; -1 1 private static boolean isPrintableChar(int c) { return 33 <= c && c <= 126;} isPrintableChar { return 33 <= c && c <= 126;} return 33 <= c && c <= 126; 33 <= c && c <= 126 33 <= c 33 c c <= 126 c 126 int c c public boolean hasNext() { while(hasNextByte() && !isPrintableChar(buffer[ptr])) ptr++; return hasNextByte();} hasNext { while(hasNextByte() && !isPrintableChar(buffer[ptr])) ptr++; return hasNextByte();} while(hasNextByte() && !isPrintableChar(buffer[ptr])) ptr++; hasNextByte() && !isPrintableChar(buffer[ptr]) hasNextByte() hasNextByte !isPrintableChar(buffer[ptr]) isPrintableChar(buffer[ptr]) isPrintableChar buffer[ptr] buffer ptr ptr++ ptr return hasNextByte(); hasNextByte() hasNextByte public String next() {
        if (!hasNext()) throw new NoSuchElementException();
        StringBuilder sb = new StringBuilder();
        int b = readByte();
        while(isPrintableChar(b)) {
            sb.appendCodePoint(b);
            b = readByte();
        }
        return sb.toString();
    } next {
        if (!hasNext()) throw new NoSuchElementException();
        StringBuilder sb = new StringBuilder();
        int b = readByte();
        while(isPrintableChar(b)) {
            sb.appendCodePoint(b);
            b = readByte();
        }
        return sb.toString();
    } if (!hasNext()) throw new NoSuchElementException(); !hasNext() hasNext() hasNext throw new NoSuchElementException(); new NoSuchElementException() StringBuilder sb = new StringBuilder(); sb new StringBuilder() int b = readByte(); b readByte() readByte while(isPrintableChar(b)) {
            sb.appendCodePoint(b);
            b = readByte();
        } isPrintableChar(b) isPrintableChar b {
            sb.appendCodePoint(b);
            b = readByte();
        } sb.appendCodePoint(b) sb.appendCodePoint sb b b = readByte() b readByte() readByte return sb.toString(); sb.toString() sb.toString sb public long nextLong() {
        if (!hasNext()) throw new NoSuchElementException();
        long n = 0;
        boolean minus = false;
        int b = readByte();
        if (b == '-') {
            minus = true;
            b = readByte();
        }
        if (b < '0' || '9' < b) {
            throw new NumberFormatException();
        }
        while(true){
            if ('0' <= b && b <= '9') {
                n *= 10;
                n += b - '0';
            }else if(b == -1 || !isPrintableChar(b)){
                return minus ? -n : n;
            }else{
                throw new NumberFormatException();
            }
            b = readByte();
        }
    } nextLong {
        if (!hasNext()) throw new NoSuchElementException();
        long n = 0;
        boolean minus = false;
        int b = readByte();
        if (b == '-') {
            minus = true;
            b = readByte();
        }
        if (b < '0' || '9' < b) {
            throw new NumberFormatException();
        }
        while(true){
            if ('0' <= b && b <= '9') {
                n *= 10;
                n += b - '0';
            }else if(b == -1 || !isPrintableChar(b)){
                return minus ? -n : n;
            }else{
                throw new NumberFormatException();
            }
            b = readByte();
        }
    } if (!hasNext()) throw new NoSuchElementException(); !hasNext() hasNext() hasNext throw new NoSuchElementException(); new NoSuchElementException() long n = 0; n 0 boolean minus = false; minus false int b = readByte(); b readByte() readByte if (b == '-') {
            minus = true;
            b = readByte();
        } b == '-' b '-' {
            minus = true;
            b = readByte();
        } minus = true minus true b = readByte() b readByte() readByte if (b < '0' || '9' < b) {
            throw new NumberFormatException();
        } b < '0' || '9' < b b < '0' b '0' '9' < b '9' b {
            throw new NumberFormatException();
        } throw new NumberFormatException(); new NumberFormatException() while(true){
            if ('0' <= b && b <= '9') {
                n *= 10;
                n += b - '0';
            }else if(b == -1 || !isPrintableChar(b)){
                return minus ? -n : n;
            }else{
                throw new NumberFormatException();
            }
            b = readByte();
        } true {
            if ('0' <= b && b <= '9') {
                n *= 10;
                n += b - '0';
            }else if(b == -1 || !isPrintableChar(b)){
                return minus ? -n : n;
            }else{
                throw new NumberFormatException();
            }
            b = readByte();
        } if ('0' <= b && b <= '9') {
                n *= 10;
                n += b - '0';
            }else if(b == -1 || !isPrintableChar(b)){
                return minus ? -n : n;
            }else{
                throw new NumberFormatException();
            } '0' <= b && b <= '9' '0' <= b '0' b b <= '9' b '9' {
                n *= 10;
                n += b - '0';
            } n *= 10 n 10 n += b - '0' n b - '0' b '0' if(b == -1 || !isPrintableChar(b)){
                return minus ? -n : n;
            }else{
                throw new NumberFormatException();
            } b == -1 || !isPrintableChar(b) b == -1 b -1 1 !isPrintableChar(b) isPrintableChar(b) isPrintableChar b {
                return minus ? -n : n;
            } return minus ? -n : n; minus ? -n : n minus -n n n {
                throw new NumberFormatException();
            } throw new NumberFormatException(); new NumberFormatException() b = readByte() b readByte() readByte public int nextInt() {
        long nl = nextLong();
        if (nl < Integer.MIN_VALUE || nl > Integer.MAX_VALUE) throw new NumberFormatException();
        return (int) nl;
    } nextInt {
        long nl = nextLong();
        if (nl < Integer.MIN_VALUE || nl > Integer.MAX_VALUE) throw new NumberFormatException();
        return (int) nl;
    } long nl = nextLong(); nl nextLong() nextLong if (nl < Integer.MIN_VALUE || nl > Integer.MAX_VALUE) throw new NumberFormatException(); nl < Integer.MIN_VALUE || nl > Integer.MAX_VALUE nl < Integer.MIN_VALUE nl Integer.MIN_VALUE Integer Integer.MIN_VALUE nl > Integer.MAX_VALUE nl Integer.MAX_VALUE Integer Integer.MAX_VALUE throw new NumberFormatException(); new NumberFormatException() return (int) nl; (int) nl public double nextDouble() { return Double.parseDouble(next());} nextDouble { return Double.parseDouble(next());} return Double.parseDouble(next()); Double.parseDouble(next()) Double.parseDouble Double next() next public class Main {

    public static void main(String[] args) {
        FastScanner fs = new FastScanner();
        int N = fs.nextInt();
        int D = fs.nextInt();

        List<Pair<Long, Long>> list = new ArrayList<>();
        for (int i = 0; i < N; ++i) {
            list.add(new Pair<>(fs.nextLong(), fs.nextLong()));
        }

        int ans = 0;
        for (int i = 0; i < N; ++i) {
            Pair<Long, Long> p = list.get(i);
            if (Math.sqrt(p.first * p.first + p.second * p.second) <= D) ++ans;
        }

        System.out.println(ans);
    }
} public class Main {

    public static void main(String[] args) {
        FastScanner fs = new FastScanner();
        int N = fs.nextInt();
        int D = fs.nextInt();

        List<Pair<Long, Long>> list = new ArrayList<>();
        for (int i = 0; i < N; ++i) {
            list.add(new Pair<>(fs.nextLong(), fs.nextLong()));
        }

        int ans = 0;
        for (int i = 0; i < N; ++i) {
            Pair<Long, Long> p = list.get(i);
            if (Math.sqrt(p.first * p.first + p.second * p.second) <= D) ++ans;
        }

        System.out.println(ans);
    }
} Main
import java.io.IOException;
import java.io.InputStream;
import java.util.*;

// Pair class
class Pair<U, V>
{
    public final U first;   	// first field of a Pair
    public final V second;  	// second field of a Pair

    // Constructs a new Pair with specified values
    public Pair(U first, V second)
    {
        this.first = first;
        this.second = second;
    }

    @Override
    // Checks specified object is "equal to" current object or not
    public boolean equals(Object o)
    {
        if (this == o)
            return true;

        if (o == null || getClass() != o.getClass())
            return false;

        Pair<?, ?> pair = (Pair<?, ?>) o;

        // call equals() method of the underlying objects
        if (!first.equals(pair.first))
            return false;
        return second.equals(pair.second);
    }

    @Override
    // Computes hash code for an object to support hash tables
    public int hashCode()
    {
        // use hash codes of the underlying objects
        return 31 * first.hashCode() + second.hashCode();
    }

    @Override
    public String toString()
    {
        return "(" + first + ", " + second + ")";
    }

    // Factory method for creating a Typed Pair immutable instance
    public static <U, V> Pair<U, V> of(U a, V b)
    {
        // calls private constructor
        return new Pair<>(a, b);
    }
}

public class Main {

    public static void main(String[] args) {
        FastScanner fs = new FastScanner();
        int N = fs.nextInt();
        int D = fs.nextInt();

        List<Pair<Long, Long>> list = new ArrayList<>();
        for (int i = 0; i < N; ++i) {
            list.add(new Pair<>(fs.nextLong(), fs.nextLong()));
        }

        int ans = 0;
        for (int i = 0; i < N; ++i) {
            Pair<Long, Long> p = list.get(i);
            if (Math.sqrt(p.first * p.first + p.second * p.second) <= D) ++ans;
        }

        System.out.println(ans);
    }
}

class FastScanner {
    private final InputStream in = System.in;
    private final byte[] buffer = new byte[1024];
    private int ptr = 0;
    private int buflen = 0;

    private boolean hasNextByte() {
        if (ptr < buflen) {
            return true;
        }else{
            ptr = 0;
            try {
                buflen = in.read(buffer);
            } catch (IOException e) {
                e.printStackTrace();
            }
            if (buflen <= 0) {
                return false;
            }
        }
        return true;
    }

    private int readByte() { if (hasNextByte()) return buffer[ptr++]; else return -1;}
    private static boolean isPrintableChar(int c) { return 33 <= c && c <= 126;}
    public boolean hasNext() { while(hasNextByte() && !isPrintableChar(buffer[ptr])) ptr++; return hasNextByte();}

    public String next() {
        if (!hasNext()) throw new NoSuchElementException();
        StringBuilder sb = new StringBuilder();
        int b = readByte();
        while(isPrintableChar(b)) {
            sb.appendCodePoint(b);
            b = readByte();
        }
        return sb.toString();
    }

    public long nextLong() {
        if (!hasNext()) throw new NoSuchElementException();
        long n = 0;
        boolean minus = false;
        int b = readByte();
        if (b == '-') {
            minus = true;
            b = readByte();
        }
        if (b < '0' || '9' < b) {
            throw new NumberFormatException();
        }
        while(true){
            if ('0' <= b && b <= '9') {
                n *= 10;
                n += b - '0';
            }else if(b == -1 || !isPrintableChar(b)){
                return minus ? -n : n;
            }else{
                throw new NumberFormatException();
            }
            b = readByte();
        }
    }

    public int nextInt() {
        long nl = nextLong();
        if (nl < Integer.MIN_VALUE || nl > Integer.MAX_VALUE) throw new NumberFormatException();
        return (int) nl;
    }

    public double nextDouble() { return Double.parseDouble(next());}
}


