import java.util.*;
import java.io.*;

public class Main {
    public static void main(String[] args) {
        FastReader sc = new FastReader();
        String a = sc.next();
        String b = sc.next();
        if (a.length() <= b.length()) {
            System.out.println(minimumChar(a, b));
        } else {
            System.out.println(minimumChar(b, a));
        }
    }

    static int minimumChar(String S1, String S2) {
        int n = S1.length();
        int m = S2.length();

        int ans = Integer.MAX_VALUE;
        for (int i = 0; i < m - n + 1; i++) {
            int minRemovedChar = 0;
            for (int j = 0; j < n; j++) {
                if (S1.charAt(j) != S2.charAt(i + j)) {
                    minRemovedChar++;
                }
            }

            ans = Math.min(minRemovedChar, ans);
        }

        return ans;
    }

    static class FastReader {
        BufferedReader br;
        StringTokenizer st;

        public FastReader() {
            br = new BufferedReader(new InputStreamReader(System.in));
        }

        String next() {
            while (st == null || !st.hasMoreElements()) {
                try {
                    st = new StringTokenizer(br.readLine());
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
            return st.nextToken();
        }

        int nextInt() {
            return Integer.parseInt(next());
        }

        long nextLong() {
            return Long.parseLong(next());
        }

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

        String nextLine() {
            String str = "";
            try {
                str = br.readLine();
            } catch (IOException e) {
                e.printStackTrace();
            }
            return str;
        }
    }
} import java.util.*; util.* java import java.io.*; io.* java public class Main {
    public static void main(String[] args) {
        FastReader sc = new FastReader();
        String a = sc.next();
        String b = sc.next();
        if (a.length() <= b.length()) {
            System.out.println(minimumChar(a, b));
        } else {
            System.out.println(minimumChar(b, a));
        }
    }

    static int minimumChar(String S1, String S2) {
        int n = S1.length();
        int m = S2.length();

        int ans = Integer.MAX_VALUE;
        for (int i = 0; i < m - n + 1; i++) {
            int minRemovedChar = 0;
            for (int j = 0; j < n; j++) {
                if (S1.charAt(j) != S2.charAt(i + j)) {
                    minRemovedChar++;
                }
            }

            ans = Math.min(minRemovedChar, ans);
        }

        return ans;
    }

    static class FastReader {
        BufferedReader br;
        StringTokenizer st;

        public FastReader() {
            br = new BufferedReader(new InputStreamReader(System.in));
        }

        String next() {
            while (st == null || !st.hasMoreElements()) {
                try {
                    st = new StringTokenizer(br.readLine());
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
            return st.nextToken();
        }

        int nextInt() {
            return Integer.parseInt(next());
        }

        long nextLong() {
            return Long.parseLong(next());
        }

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

        String nextLine() {
            String str = "";
            try {
                str = br.readLine();
            } catch (IOException e) {
                e.printStackTrace();
            }
            return str;
        }
    }
} Main public static void main(String[] args) {
        FastReader sc = new FastReader();
        String a = sc.next();
        String b = sc.next();
        if (a.length() <= b.length()) {
            System.out.println(minimumChar(a, b));
        } else {
            System.out.println(minimumChar(b, a));
        }
    } main {
        FastReader sc = new FastReader();
        String a = sc.next();
        String b = sc.next();
        if (a.length() <= b.length()) {
            System.out.println(minimumChar(a, b));
        } else {
            System.out.println(minimumChar(b, a));
        }
    } FastReader sc = new FastReader(); sc new FastReader() String a = sc.next(); a sc.next() sc.next sc String b = sc.next(); b sc.next() sc.next sc if (a.length() <= b.length()) {
            System.out.println(minimumChar(a, b));
        } else {
            System.out.println(minimumChar(b, a));
        } a.length() <= b.length() a.length() a.length a b.length() b.length b {
            System.out.println(minimumChar(a, b));
        } System.out.println(minimumChar(a, b)) System.out.println System.out System System.out minimumChar(a, b) minimumChar a b {
            System.out.println(minimumChar(b, a));
        } System.out.println(minimumChar(b, a)) System.out.println System.out System System.out minimumChar(b, a) minimumChar b a String[] args args static int minimumChar(String S1, String S2) {
        int n = S1.length();
        int m = S2.length();

        int ans = Integer.MAX_VALUE;
        for (int i = 0; i < m - n + 1; i++) {
            int minRemovedChar = 0;
            for (int j = 0; j < n; j++) {
                if (S1.charAt(j) != S2.charAt(i + j)) {
                    minRemovedChar++;
                }
            }

            ans = Math.min(minRemovedChar, ans);
        }

        return ans;
    } minimumChar {
        int n = S1.length();
        int m = S2.length();

        int ans = Integer.MAX_VALUE;
        for (int i = 0; i < m - n + 1; i++) {
            int minRemovedChar = 0;
            for (int j = 0; j < n; j++) {
                if (S1.charAt(j) != S2.charAt(i + j)) {
                    minRemovedChar++;
                }
            }

            ans = Math.min(minRemovedChar, ans);
        }

        return ans;
    } int n = S1.length(); n S1.length() S1.length S1 int m = S2.length(); m S2.length() S2.length S2 int ans = Integer.MAX_VALUE; ans Integer.MAX_VALUE Integer Integer.MAX_VALUE for (int i = 0; i < m - n + 1; i++) {
            int minRemovedChar = 0;
            for (int j = 0; j < n; j++) {
                if (S1.charAt(j) != S2.charAt(i + j)) {
                    minRemovedChar++;
                }
            }

            ans = Math.min(minRemovedChar, ans);
        } int i = 0; int i = 0; i 0 i < m - n + 1 i m - n + 1 m - n m n 1 i++ i++ i {
            int minRemovedChar = 0;
            for (int j = 0; j < n; j++) {
                if (S1.charAt(j) != S2.charAt(i + j)) {
                    minRemovedChar++;
                }
            }

            ans = Math.min(minRemovedChar, ans);
        } {
            int minRemovedChar = 0;
            for (int j = 0; j < n; j++) {
                if (S1.charAt(j) != S2.charAt(i + j)) {
                    minRemovedChar++;
                }
            }

            ans = Math.min(minRemovedChar, ans);
        } int minRemovedChar = 0; minRemovedChar 0 for (int j = 0; j < n; j++) {
                if (S1.charAt(j) != S2.charAt(i + j)) {
                    minRemovedChar++;
                }
            } int j = 0; int j = 0; j 0 j < n j n j++ j++ j {
                if (S1.charAt(j) != S2.charAt(i + j)) {
                    minRemovedChar++;
                }
            } {
                if (S1.charAt(j) != S2.charAt(i + j)) {
                    minRemovedChar++;
                }
            } if (S1.charAt(j) != S2.charAt(i + j)) {
                    minRemovedChar++;
                } S1.charAt(j) != S2.charAt(i + j) S1.charAt(j) S1.charAt S1 j S2.charAt(i + j) S2.charAt S2 i + j i j {
                    minRemovedChar++;
                } minRemovedChar++ minRemovedChar ans = Math.min(minRemovedChar, ans) ans Math.min(minRemovedChar, ans) Math.min Math minRemovedChar ans return ans; ans String S1 S1 String S2 S2 static class FastReader {
        BufferedReader br;
        StringTokenizer st;

        public FastReader() {
            br = new BufferedReader(new InputStreamReader(System.in));
        }

        String next() {
            while (st == null || !st.hasMoreElements()) {
                try {
                    st = new StringTokenizer(br.readLine());
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
            return st.nextToken();
        }

        int nextInt() {
            return Integer.parseInt(next());
        }

        long nextLong() {
            return Long.parseLong(next());
        }

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

        String nextLine() {
            String str = "";
            try {
                str = br.readLine();
            } catch (IOException e) {
                e.printStackTrace();
            }
            return str;
        }
    } FastReader BufferedReader br; br StringTokenizer st; st public FastReader() {
            br = new BufferedReader(new InputStreamReader(System.in));
        } FastReader {
            br = new BufferedReader(new InputStreamReader(System.in));
        } br = new BufferedReader(new InputStreamReader(System.in)) br new BufferedReader(new InputStreamReader(System.in)) String next() {
            while (st == null || !st.hasMoreElements()) {
                try {
                    st = new StringTokenizer(br.readLine());
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
            return st.nextToken();
        } next {
            while (st == null || !st.hasMoreElements()) {
                try {
                    st = new StringTokenizer(br.readLine());
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
            return st.nextToken();
        } while (st == null || !st.hasMoreElements()) {
                try {
                    st = new StringTokenizer(br.readLine());
                } catch (IOException e) {
                    e.printStackTrace();
                }
            } st == null || !st.hasMoreElements() st == null st null !st.hasMoreElements() st.hasMoreElements() st.hasMoreElements st {
                try {
                    st = new StringTokenizer(br.readLine());
                } catch (IOException e) {
                    e.printStackTrace();
                }
            } try {
                    st = new StringTokenizer(br.readLine());
                } catch (IOException e) {
                    e.printStackTrace();
                } catch (IOException e) {
                    e.printStackTrace();
                } IOException e {
                    e.printStackTrace();
                } e.printStackTrace() e.printStackTrace e {
                    st = new StringTokenizer(br.readLine());
                } st = new StringTokenizer(br.readLine()) st new StringTokenizer(br.readLine()) return st.nextToken(); st.nextToken() st.nextToken st int nextInt() {
            return Integer.parseInt(next());
        } nextInt {
            return Integer.parseInt(next());
        } return Integer.parseInt(next()); Integer.parseInt(next()) Integer.parseInt Integer next() next long nextLong() {
            return Long.parseLong(next());
        } nextLong {
            return Long.parseLong(next());
        } return Long.parseLong(next()); Long.parseLong(next()) Long.parseLong Long next() next double nextDouble() {
            return Double.parseDouble(next());
        } nextDouble {
            return Double.parseDouble(next());
        } return Double.parseDouble(next()); Double.parseDouble(next()) Double.parseDouble Double next() next String nextLine() {
            String str = "";
            try {
                str = br.readLine();
            } catch (IOException e) {
                e.printStackTrace();
            }
            return str;
        } nextLine {
            String str = "";
            try {
                str = br.readLine();
            } catch (IOException e) {
                e.printStackTrace();
            }
            return str;
        } String str = ""; str "" try {
                str = br.readLine();
            } catch (IOException e) {
                e.printStackTrace();
            } catch (IOException e) {
                e.printStackTrace();
            } IOException e {
                e.printStackTrace();
            } e.printStackTrace() e.printStackTrace e {
                str = br.readLine();
            } str = br.readLine() str br.readLine() br.readLine br return str; str public class Main {
    public static void main(String[] args) {
        FastReader sc = new FastReader();
        String a = sc.next();
        String b = sc.next();
        if (a.length() <= b.length()) {
            System.out.println(minimumChar(a, b));
        } else {
            System.out.println(minimumChar(b, a));
        }
    }

    static int minimumChar(String S1, String S2) {
        int n = S1.length();
        int m = S2.length();

        int ans = Integer.MAX_VALUE;
        for (int i = 0; i < m - n + 1; i++) {
            int minRemovedChar = 0;
            for (int j = 0; j < n; j++) {
                if (S1.charAt(j) != S2.charAt(i + j)) {
                    minRemovedChar++;
                }
            }

            ans = Math.min(minRemovedChar, ans);
        }

        return ans;
    }

    static class FastReader {
        BufferedReader br;
        StringTokenizer st;

        public FastReader() {
            br = new BufferedReader(new InputStreamReader(System.in));
        }

        String next() {
            while (st == null || !st.hasMoreElements()) {
                try {
                    st = new StringTokenizer(br.readLine());
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
            return st.nextToken();
        }

        int nextInt() {
            return Integer.parseInt(next());
        }

        long nextLong() {
            return Long.parseLong(next());
        }

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

        String nextLine() {
            String str = "";
            try {
                str = br.readLine();
            } catch (IOException e) {
                e.printStackTrace();
            }
            return str;
        }
    }
} public class Main {
    public static void main(String[] args) {
        FastReader sc = new FastReader();
        String a = sc.next();
        String b = sc.next();
        if (a.length() <= b.length()) {
            System.out.println(minimumChar(a, b));
        } else {
            System.out.println(minimumChar(b, a));
        }
    }

    static int minimumChar(String S1, String S2) {
        int n = S1.length();
        int m = S2.length();

        int ans = Integer.MAX_VALUE;
        for (int i = 0; i < m - n + 1; i++) {
            int minRemovedChar = 0;
            for (int j = 0; j < n; j++) {
                if (S1.charAt(j) != S2.charAt(i + j)) {
                    minRemovedChar++;
                }
            }

            ans = Math.min(minRemovedChar, ans);
        }

        return ans;
    }

    static class FastReader {
        BufferedReader br;
        StringTokenizer st;

        public FastReader() {
            br = new BufferedReader(new InputStreamReader(System.in));
        }

        String next() {
            while (st == null || !st.hasMoreElements()) {
                try {
                    st = new StringTokenizer(br.readLine());
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
            return st.nextToken();
        }

        int nextInt() {
            return Integer.parseInt(next());
        }

        long nextLong() {
            return Long.parseLong(next());
        }

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

        String nextLine() {
            String str = "";
            try {
                str = br.readLine();
            } catch (IOException e) {
                e.printStackTrace();
            }
            return str;
        }
    }
} Main
import java.util.*;
import java.io.*;

public class Main {
    public static void main(String[] args) {
        FastReader sc = new FastReader();
        String a = sc.next();
        String b = sc.next();
        if (a.length() <= b.length()) {
            System.out.println(minimumChar(a, b));
        } else {
            System.out.println(minimumChar(b, a));
        }
    }

    static int minimumChar(String S1, String S2) {
        int n = S1.length();
        int m = S2.length();

        int ans = Integer.MAX_VALUE;
        for (int i = 0; i < m - n + 1; i++) {
            int minRemovedChar = 0;
            for (int j = 0; j < n; j++) {
                if (S1.charAt(j) != S2.charAt(i + j)) {
                    minRemovedChar++;
                }
            }

            ans = Math.min(minRemovedChar, ans);
        }

        return ans;
    }

    static class FastReader {
        BufferedReader br;
        StringTokenizer st;

        public FastReader() {
            br = new BufferedReader(new InputStreamReader(System.in));
        }

        String next() {
            while (st == null || !st.hasMoreElements()) {
                try {
                    st = new StringTokenizer(br.readLine());
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
            return st.nextToken();
        }

        int nextInt() {
            return Integer.parseInt(next());
        }

        long nextLong() {
            return Long.parseLong(next());
        }

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

        String nextLine() {
            String str = "";
            try {
                str = br.readLine();
            } catch (IOException e) {
                e.printStackTrace();
            }
            return str;
        }
    }
}