import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.StringTokenizer;

public class Main {

	public static void main(String[] args) throws IOException {
		Main mainObj = new Main();
		mainObj.solve();
	}

	public void solve() throws IOException {
		FastScanner fs = new FastScanner();
		
		long n = fs.nextLong();
		
		int digitNum = 1;
		long cumulate = pow(26L, digitNum);
		while(n > cumulate) {
			digitNum++;
			cumulate += pow(26L, digitNum);
		}
		
		
		n -= cumulate - pow(26L, digitNum);
		n--;
		
		String[] id = new String[digitNum];
		for(int i = 0; i < digitNum; i++) {
			id[i] = "a";
		}
		
		
		for(int i = digitNum; i >= 1; i--) {
			
//			long  sub = 0;
//			for(int j = 1; j <= digitNum-1;j++) {
//				sub += pow(26L, j);
//			}
			
			long pow = pow(26L, i-1);
			int num = 1;
			while(n >= num * pow) {
				num++;
			}
			num--;
			
			
			char[] arr = new char[1];
			arr[0] = (char)(97+num);
//			System.out.println(num);
			id[i-1] = new String(arr);
			n -= pow*num;
		}
		
		
		String ans = "";
		for(int i = digitNum-1; i >= 0; i--) {
			ans+=id[i];
		}
		
		System.out.println(ans);
	}

	public long pow(long base, int n) {
		long retVal = 1;
		while (n > 0) {
			if ((n & 1) == 1) {
				retVal *= base;
			}
			n >>= 1;
			base *= base;
		}
		return retVal;
	}

	public class FastScanner {

		BufferedReader reader;
		private StringTokenizer st;

		public FastScanner() {
			st = null;
			reader = new BufferedReader(new InputStreamReader(System.in));
		}

		public String next() throws IOException {
			if (st == null || !st.hasMoreElements()) {
				st = new StringTokenizer(reader.readLine());
			}
			return st.nextToken();
		}

		public String nextLine() throws IOException {
			st = null;
			String readLine = null;
			readLine = reader.readLine();
			return readLine;
		}

		public int nextInt() throws NumberFormatException, IOException {
			return Integer.parseInt(next());
		}

		public long nextLong() throws NumberFormatException, IOException {
			return Long.parseLong(next());
		}

		public int[] nextIntArr(int n) throws NumberFormatException, IOException {
			int[] retArr = new int[n];
			for (int i = 0; i < n; i++) {
				retArr[i] = nextInt();
			}
			return retArr;
		}

		public long[] nextLongArr(int n) throws NumberFormatException, IOException {
			long[] retArr = new long[n];
			for (int i = 0; i < n; i++) {
				retArr[i] = nextLong();
			}
			return retArr;
		}

		public void close() throws IOException {
			reader.close();
		}
	}

} import java.io.BufferedReader; BufferedReader java.io import java.io.IOException; IOException java.io import java.io.InputStreamReader; InputStreamReader java.io import java.util.StringTokenizer; StringTokenizer java.util public class Main {

	public static void main(String[] args) throws IOException {
		Main mainObj = new Main();
		mainObj.solve();
	}

	public void solve() throws IOException {
		FastScanner fs = new FastScanner();
		
		long n = fs.nextLong();
		
		int digitNum = 1;
		long cumulate = pow(26L, digitNum);
		while(n > cumulate) {
			digitNum++;
			cumulate += pow(26L, digitNum);
		}
		
		
		n -= cumulate - pow(26L, digitNum);
		n--;
		
		String[] id = new String[digitNum];
		for(int i = 0; i < digitNum; i++) {
			id[i] = "a";
		}
		
		
		for(int i = digitNum; i >= 1; i--) {
			
//			long  sub = 0;
//			for(int j = 1; j <= digitNum-1;j++) {
//				sub += pow(26L, j);
//			}
			
			long pow = pow(26L, i-1);
			int num = 1;
			while(n >= num * pow) {
				num++;
			}
			num--;
			
			
			char[] arr = new char[1];
			arr[0] = (char)(97+num);
//			System.out.println(num);
			id[i-1] = new String(arr);
			n -= pow*num;
		}
		
		
		String ans = "";
		for(int i = digitNum-1; i >= 0; i--) {
			ans+=id[i];
		}
		
		System.out.println(ans);
	}

	public long pow(long base, int n) {
		long retVal = 1;
		while (n > 0) {
			if ((n & 1) == 1) {
				retVal *= base;
			}
			n >>= 1;
			base *= base;
		}
		return retVal;
	}

	public class FastScanner {

		BufferedReader reader;
		private StringTokenizer st;

		public FastScanner() {
			st = null;
			reader = new BufferedReader(new InputStreamReader(System.in));
		}

		public String next() throws IOException {
			if (st == null || !st.hasMoreElements()) {
				st = new StringTokenizer(reader.readLine());
			}
			return st.nextToken();
		}

		public String nextLine() throws IOException {
			st = null;
			String readLine = null;
			readLine = reader.readLine();
			return readLine;
		}

		public int nextInt() throws NumberFormatException, IOException {
			return Integer.parseInt(next());
		}

		public long nextLong() throws NumberFormatException, IOException {
			return Long.parseLong(next());
		}

		public int[] nextIntArr(int n) throws NumberFormatException, IOException {
			int[] retArr = new int[n];
			for (int i = 0; i < n; i++) {
				retArr[i] = nextInt();
			}
			return retArr;
		}

		public long[] nextLongArr(int n) throws NumberFormatException, IOException {
			long[] retArr = new long[n];
			for (int i = 0; i < n; i++) {
				retArr[i] = nextLong();
			}
			return retArr;
		}

		public void close() throws IOException {
			reader.close();
		}
	}

} Main public static void main(String[] args) throws IOException {
		Main mainObj = new Main();
		mainObj.solve();
	} main {
		Main mainObj = new Main();
		mainObj.solve();
	} Main mainObj = new Main(); mainObj new Main() mainObj.solve() mainObj.solve mainObj String[] args args public void solve() throws IOException {
		FastScanner fs = new FastScanner();
		
		long n = fs.nextLong();
		
		int digitNum = 1;
		long cumulate = pow(26L, digitNum);
		while(n > cumulate) {
			digitNum++;
			cumulate += pow(26L, digitNum);
		}
		
		
		n -= cumulate - pow(26L, digitNum);
		n--;
		
		String[] id = new String[digitNum];
		for(int i = 0; i < digitNum; i++) {
			id[i] = "a";
		}
		
		
		for(int i = digitNum; i >= 1; i--) {
			
//			long  sub = 0;
//			for(int j = 1; j <= digitNum-1;j++) {
//				sub += pow(26L, j);
//			}
			
			long pow = pow(26L, i-1);
			int num = 1;
			while(n >= num * pow) {
				num++;
			}
			num--;
			
			
			char[] arr = new char[1];
			arr[0] = (char)(97+num);
//			System.out.println(num);
			id[i-1] = new String(arr);
			n -= pow*num;
		}
		
		
		String ans = "";
		for(int i = digitNum-1; i >= 0; i--) {
			ans+=id[i];
		}
		
		System.out.println(ans);
	} solve {
		FastScanner fs = new FastScanner();
		
		long n = fs.nextLong();
		
		int digitNum = 1;
		long cumulate = pow(26L, digitNum);
		while(n > cumulate) {
			digitNum++;
			cumulate += pow(26L, digitNum);
		}
		
		
		n -= cumulate - pow(26L, digitNum);
		n--;
		
		String[] id = new String[digitNum];
		for(int i = 0; i < digitNum; i++) {
			id[i] = "a";
		}
		
		
		for(int i = digitNum; i >= 1; i--) {
			
//			long  sub = 0;
//			for(int j = 1; j <= digitNum-1;j++) {
//				sub += pow(26L, j);
//			}
			
			long pow = pow(26L, i-1);
			int num = 1;
			while(n >= num * pow) {
				num++;
			}
			num--;
			
			
			char[] arr = new char[1];
			arr[0] = (char)(97+num);
//			System.out.println(num);
			id[i-1] = new String(arr);
			n -= pow*num;
		}
		
		
		String ans = "";
		for(int i = digitNum-1; i >= 0; i--) {
			ans+=id[i];
		}
		
		System.out.println(ans);
	} FastScanner fs = new FastScanner(); fs new FastScanner() long n = fs.nextLong(); n fs.nextLong() fs.nextLong fs int digitNum = 1; digitNum 1 long cumulate = pow(26L, digitNum); cumulate pow(26L, digitNum) pow 26L digitNum while(n > cumulate) {
			digitNum++;
			cumulate += pow(26L, digitNum);
		} n > cumulate n cumulate {
			digitNum++;
			cumulate += pow(26L, digitNum);
		} digitNum++ digitNum cumulate += pow(26L, digitNum) cumulate pow(26L, digitNum) pow 26L digitNum n -= cumulate - pow(26L, digitNum) n cumulate - pow(26L, digitNum) cumulate pow(26L, digitNum) pow 26L digitNum n-- n String[] id = new String[digitNum]; id new String[digitNum] digitNum for(int i = 0; i < digitNum; i++) {
			id[i] = "a";
		} int i = 0; int i = 0; i 0 i < digitNum i digitNum i++ i++ i {
			id[i] = "a";
		} {
			id[i] = "a";
		} id[i] = "a" id[i] id i "a" for(int i = digitNum; i >= 1; i--) {
			
//			long  sub = 0;
//			for(int j = 1; j <= digitNum-1;j++) {
//				sub += pow(26L, j);
//			}
			
			long pow = pow(26L, i-1);
			int num = 1;
			while(n >= num * pow) {
				num++;
			}
			num--;
			
			
			char[] arr = new char[1];
			arr[0] = (char)(97+num);
//			System.out.println(num);
			id[i-1] = new String(arr);
			n -= pow*num;
		} int i = digitNum; int i = digitNum; i digitNum i >= 1 i 1 i-- i-- i {
			
//			long  sub = 0;
//			for(int j = 1; j <= digitNum-1;j++) {
//				sub += pow(26L, j);
//			}
			
			long pow = pow(26L, i-1);
			int num = 1;
			while(n >= num * pow) {
				num++;
			}
			num--;
			
			
			char[] arr = new char[1];
			arr[0] = (char)(97+num);
//			System.out.println(num);
			id[i-1] = new String(arr);
			n -= pow*num;
		} {
			
//			long  sub = 0;
//			for(int j = 1; j <= digitNum-1;j++) {
//				sub += pow(26L, j);
//			}
			
			long pow = pow(26L, i-1);
			int num = 1;
			while(n >= num * pow) {
				num++;
			}
			num--;
			
			
			char[] arr = new char[1];
			arr[0] = (char)(97+num);
//			System.out.println(num);
			id[i-1] = new String(arr);
			n -= pow*num;
		} long pow = pow(26L, i-1); pow pow(26L, i-1) pow 26L i-1 i 1 int num = 1; num 1 while(n >= num * pow) {
				num++;
			} n >= num * pow n num * pow num pow {
				num++;
			} num++ num num-- num char[] arr = new char[1]; arr new char[1] 1 arr[0] = (char)(97+num) arr[0] arr 0 (char)(97+num) 97 num id[i-1] = new String(arr) id[i-1] id i-1 i 1 new String(arr) n -= pow*num n pow*num pow num String ans = ""; ans "" for(int i = digitNum-1; i >= 0; i--) {
			ans+=id[i];
		} int i = digitNum-1; int i = digitNum-1; i digitNum-1 digitNum 1 i >= 0 i 0 i-- i-- i {
			ans+=id[i];
		} {
			ans+=id[i];
		} ans+=id[i] ans id[i] id i System.out.println(ans) System.out.println System.out System System.out ans public long pow(long base, int n) {
		long retVal = 1;
		while (n > 0) {
			if ((n & 1) == 1) {
				retVal *= base;
			}
			n >>= 1;
			base *= base;
		}
		return retVal;
	} pow {
		long retVal = 1;
		while (n > 0) {
			if ((n & 1) == 1) {
				retVal *= base;
			}
			n >>= 1;
			base *= base;
		}
		return retVal;
	} long retVal = 1; retVal 1 while (n > 0) {
			if ((n & 1) == 1) {
				retVal *= base;
			}
			n >>= 1;
			base *= base;
		} n > 0 n 0 {
			if ((n & 1) == 1) {
				retVal *= base;
			}
			n >>= 1;
			base *= base;
		} if ((n & 1) == 1) {
				retVal *= base;
			} (n & 1) == 1 (n & 1) n 1 1 {
				retVal *= base;
			} retVal *= base retVal base n >>= 1 n 1 base *= base base base return retVal; retVal long base base int n n public class FastScanner {

		BufferedReader reader;
		private StringTokenizer st;

		public FastScanner() {
			st = null;
			reader = new BufferedReader(new InputStreamReader(System.in));
		}

		public String next() throws IOException {
			if (st == null || !st.hasMoreElements()) {
				st = new StringTokenizer(reader.readLine());
			}
			return st.nextToken();
		}

		public String nextLine() throws IOException {
			st = null;
			String readLine = null;
			readLine = reader.readLine();
			return readLine;
		}

		public int nextInt() throws NumberFormatException, IOException {
			return Integer.parseInt(next());
		}

		public long nextLong() throws NumberFormatException, IOException {
			return Long.parseLong(next());
		}

		public int[] nextIntArr(int n) throws NumberFormatException, IOException {
			int[] retArr = new int[n];
			for (int i = 0; i < n; i++) {
				retArr[i] = nextInt();
			}
			return retArr;
		}

		public long[] nextLongArr(int n) throws NumberFormatException, IOException {
			long[] retArr = new long[n];
			for (int i = 0; i < n; i++) {
				retArr[i] = nextLong();
			}
			return retArr;
		}

		public void close() throws IOException {
			reader.close();
		}
	} FastScanner BufferedReader reader; reader private StringTokenizer st; st public FastScanner() {
			st = null;
			reader = new BufferedReader(new InputStreamReader(System.in));
		} FastScanner {
			st = null;
			reader = new BufferedReader(new InputStreamReader(System.in));
		} st = null st null reader = new BufferedReader(new InputStreamReader(System.in)) reader new BufferedReader(new InputStreamReader(System.in)) public String next() throws IOException {
			if (st == null || !st.hasMoreElements()) {
				st = new StringTokenizer(reader.readLine());
			}
			return st.nextToken();
		} next {
			if (st == null || !st.hasMoreElements()) {
				st = new StringTokenizer(reader.readLine());
			}
			return st.nextToken();
		} if (st == null || !st.hasMoreElements()) {
				st = new StringTokenizer(reader.readLine());
			} st == null || !st.hasMoreElements() st == null st null !st.hasMoreElements() st.hasMoreElements() st.hasMoreElements st {
				st = new StringTokenizer(reader.readLine());
			} st = new StringTokenizer(reader.readLine()) st new StringTokenizer(reader.readLine()) return st.nextToken(); st.nextToken() st.nextToken st public String nextLine() throws IOException {
			st = null;
			String readLine = null;
			readLine = reader.readLine();
			return readLine;
		} nextLine {
			st = null;
			String readLine = null;
			readLine = reader.readLine();
			return readLine;
		} st = null st null String readLine = null; readLine null readLine = reader.readLine() readLine reader.readLine() reader.readLine reader return readLine; readLine public int nextInt() throws NumberFormatException, IOException {
			return Integer.parseInt(next());
		} nextInt {
			return Integer.parseInt(next());
		} return Integer.parseInt(next()); Integer.parseInt(next()) Integer.parseInt Integer next() next public long nextLong() throws NumberFormatException, IOException {
			return Long.parseLong(next());
		} nextLong {
			return Long.parseLong(next());
		} return Long.parseLong(next()); Long.parseLong(next()) Long.parseLong Long next() next public int[] nextIntArr(int n) throws NumberFormatException, IOException {
			int[] retArr = new int[n];
			for (int i = 0; i < n; i++) {
				retArr[i] = nextInt();
			}
			return retArr;
		} nextIntArr {
			int[] retArr = new int[n];
			for (int i = 0; i < n; i++) {
				retArr[i] = nextInt();
			}
			return retArr;
		} int[] retArr = new int[n]; retArr new int[n] n for (int i = 0; i < n; i++) {
				retArr[i] = nextInt();
			} int i = 0; int i = 0; i 0 i < n i n i++ i++ i {
				retArr[i] = nextInt();
			} {
				retArr[i] = nextInt();
			} retArr[i] = nextInt() retArr[i] retArr i nextInt() nextInt return retArr; retArr int n n public long[] nextLongArr(int n) throws NumberFormatException, IOException {
			long[] retArr = new long[n];
			for (int i = 0; i < n; i++) {
				retArr[i] = nextLong();
			}
			return retArr;
		} nextLongArr {
			long[] retArr = new long[n];
			for (int i = 0; i < n; i++) {
				retArr[i] = nextLong();
			}
			return retArr;
		} long[] retArr = new long[n]; retArr new long[n] n for (int i = 0; i < n; i++) {
				retArr[i] = nextLong();
			} int i = 0; int i = 0; i 0 i < n i n i++ i++ i {
				retArr[i] = nextLong();
			} {
				retArr[i] = nextLong();
			} retArr[i] = nextLong() retArr[i] retArr i nextLong() nextLong return retArr; retArr int n n public void close() throws IOException {
			reader.close();
		} close {
			reader.close();
		} reader.close() reader.close reader public class Main {

	public static void main(String[] args) throws IOException {
		Main mainObj = new Main();
		mainObj.solve();
	}

	public void solve() throws IOException {
		FastScanner fs = new FastScanner();
		
		long n = fs.nextLong();
		
		int digitNum = 1;
		long cumulate = pow(26L, digitNum);
		while(n > cumulate) {
			digitNum++;
			cumulate += pow(26L, digitNum);
		}
		
		
		n -= cumulate - pow(26L, digitNum);
		n--;
		
		String[] id = new String[digitNum];
		for(int i = 0; i < digitNum; i++) {
			id[i] = "a";
		}
		
		
		for(int i = digitNum; i >= 1; i--) {
			
//			long  sub = 0;
//			for(int j = 1; j <= digitNum-1;j++) {
//				sub += pow(26L, j);
//			}
			
			long pow = pow(26L, i-1);
			int num = 1;
			while(n >= num * pow) {
				num++;
			}
			num--;
			
			
			char[] arr = new char[1];
			arr[0] = (char)(97+num);
//			System.out.println(num);
			id[i-1] = new String(arr);
			n -= pow*num;
		}
		
		
		String ans = "";
		for(int i = digitNum-1; i >= 0; i--) {
			ans+=id[i];
		}
		
		System.out.println(ans);
	}

	public long pow(long base, int n) {
		long retVal = 1;
		while (n > 0) {
			if ((n & 1) == 1) {
				retVal *= base;
			}
			n >>= 1;
			base *= base;
		}
		return retVal;
	}

	public class FastScanner {

		BufferedReader reader;
		private StringTokenizer st;

		public FastScanner() {
			st = null;
			reader = new BufferedReader(new InputStreamReader(System.in));
		}

		public String next() throws IOException {
			if (st == null || !st.hasMoreElements()) {
				st = new StringTokenizer(reader.readLine());
			}
			return st.nextToken();
		}

		public String nextLine() throws IOException {
			st = null;
			String readLine = null;
			readLine = reader.readLine();
			return readLine;
		}

		public int nextInt() throws NumberFormatException, IOException {
			return Integer.parseInt(next());
		}

		public long nextLong() throws NumberFormatException, IOException {
			return Long.parseLong(next());
		}

		public int[] nextIntArr(int n) throws NumberFormatException, IOException {
			int[] retArr = new int[n];
			for (int i = 0; i < n; i++) {
				retArr[i] = nextInt();
			}
			return retArr;
		}

		public long[] nextLongArr(int n) throws NumberFormatException, IOException {
			long[] retArr = new long[n];
			for (int i = 0; i < n; i++) {
				retArr[i] = nextLong();
			}
			return retArr;
		}

		public void close() throws IOException {
			reader.close();
		}
	}

} public class Main {

	public static void main(String[] args) throws IOException {
		Main mainObj = new Main();
		mainObj.solve();
	}

	public void solve() throws IOException {
		FastScanner fs = new FastScanner();
		
		long n = fs.nextLong();
		
		int digitNum = 1;
		long cumulate = pow(26L, digitNum);
		while(n > cumulate) {
			digitNum++;
			cumulate += pow(26L, digitNum);
		}
		
		
		n -= cumulate - pow(26L, digitNum);
		n--;
		
		String[] id = new String[digitNum];
		for(int i = 0; i < digitNum; i++) {
			id[i] = "a";
		}
		
		
		for(int i = digitNum; i >= 1; i--) {
			
//			long  sub = 0;
//			for(int j = 1; j <= digitNum-1;j++) {
//				sub += pow(26L, j);
//			}
			
			long pow = pow(26L, i-1);
			int num = 1;
			while(n >= num * pow) {
				num++;
			}
			num--;
			
			
			char[] arr = new char[1];
			arr[0] = (char)(97+num);
//			System.out.println(num);
			id[i-1] = new String(arr);
			n -= pow*num;
		}
		
		
		String ans = "";
		for(int i = digitNum-1; i >= 0; i--) {
			ans+=id[i];
		}
		
		System.out.println(ans);
	}

	public long pow(long base, int n) {
		long retVal = 1;
		while (n > 0) {
			if ((n & 1) == 1) {
				retVal *= base;
			}
			n >>= 1;
			base *= base;
		}
		return retVal;
	}

	public class FastScanner {

		BufferedReader reader;
		private StringTokenizer st;

		public FastScanner() {
			st = null;
			reader = new BufferedReader(new InputStreamReader(System.in));
		}

		public String next() throws IOException {
			if (st == null || !st.hasMoreElements()) {
				st = new StringTokenizer(reader.readLine());
			}
			return st.nextToken();
		}

		public String nextLine() throws IOException {
			st = null;
			String readLine = null;
			readLine = reader.readLine();
			return readLine;
		}

		public int nextInt() throws NumberFormatException, IOException {
			return Integer.parseInt(next());
		}

		public long nextLong() throws NumberFormatException, IOException {
			return Long.parseLong(next());
		}

		public int[] nextIntArr(int n) throws NumberFormatException, IOException {
			int[] retArr = new int[n];
			for (int i = 0; i < n; i++) {
				retArr[i] = nextInt();
			}
			return retArr;
		}

		public long[] nextLongArr(int n) throws NumberFormatException, IOException {
			long[] retArr = new long[n];
			for (int i = 0; i < n; i++) {
				retArr[i] = nextLong();
			}
			return retArr;
		}

		public void close() throws IOException {
			reader.close();
		}
	}

} Main
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.StringTokenizer;

public class Main {

	public static void main(String[] args) throws IOException {
		Main mainObj = new Main();
		mainObj.solve();
	}

	public void solve() throws IOException {
		FastScanner fs = new FastScanner();
		
		long n = fs.nextLong();
		
		int digitNum = 1;
		long cumulate = pow(26L, digitNum);
		while(n > cumulate) {
			digitNum++;
			cumulate += pow(26L, digitNum);
		}
		
		
		n -= cumulate - pow(26L, digitNum);
		n--;
		
		String[] id = new String[digitNum];
		for(int i = 0; i < digitNum; i++) {
			id[i] = "a";
		}
		
		
		for(int i = digitNum; i >= 1; i--) {
			
//			long  sub = 0;
//			for(int j = 1; j <= digitNum-1;j++) {
//				sub += pow(26L, j);
//			}
			
			long pow = pow(26L, i-1);
			int num = 1;
			while(n >= num * pow) {
				num++;
			}
			num--;
			
			
			char[] arr = new char[1];
			arr[0] = (char)(97+num);
//			System.out.println(num);
			id[i-1] = new String(arr);
			n -= pow*num;
		}
		
		
		String ans = "";
		for(int i = digitNum-1; i >= 0; i--) {
			ans+=id[i];
		}
		
		System.out.println(ans);
	}

	public long pow(long base, int n) {
		long retVal = 1;
		while (n > 0) {
			if ((n & 1) == 1) {
				retVal *= base;
			}
			n >>= 1;
			base *= base;
		}
		return retVal;
	}

	public class FastScanner {

		BufferedReader reader;
		private StringTokenizer st;

		public FastScanner() {
			st = null;
			reader = new BufferedReader(new InputStreamReader(System.in));
		}

		public String next() throws IOException {
			if (st == null || !st.hasMoreElements()) {
				st = new StringTokenizer(reader.readLine());
			}
			return st.nextToken();
		}

		public String nextLine() throws IOException {
			st = null;
			String readLine = null;
			readLine = reader.readLine();
			return readLine;
		}

		public int nextInt() throws NumberFormatException, IOException {
			return Integer.parseInt(next());
		}

		public long nextLong() throws NumberFormatException, IOException {
			return Long.parseLong(next());
		}

		public int[] nextIntArr(int n) throws NumberFormatException, IOException {
			int[] retArr = new int[n];
			for (int i = 0; i < n; i++) {
				retArr[i] = nextInt();
			}
			return retArr;
		}

		public long[] nextLongArr(int n) throws NumberFormatException, IOException {
			long[] retArr = new long[n];
			for (int i = 0; i < n; i++) {
				retArr[i] = nextLong();
			}
			return retArr;
		}

		public void close() throws IOException {
			reader.close();
		}
	}

}
