import java.io.OutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.PrintWriter;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.util.StringTokenizer;

public class Main {
    public static void main(String[] args) {
        InputStream inputStream = System.in;
        OutputStream outputStream = System.out;
        InputReader in = new InputReader(inputStream);
        PrintWriter out = new PrintWriter(outputStream);

        Problem solver = new Problem();
        solver.solve(0, in, out);
        out.close();
    }

    static class Problem {

        public void solve(int testNumber, InputReader in, PrintWriter out) {
            String s = in.next(), t = in.next();
            int min = t.length();
            for(int i = 0; i <= s.length() - t.length(); i++) {
                int count = getCount(s, t, i);
                min = Math.min(min, count);
            }
            out.println(min);
        }

        private int getCount(String s, String t, int idx) {
            int count = 0;
            for(int i = idx, j = 0; j < t.length(); i++, j++) {
                if(s.charAt(i) != t.charAt(j))
                    count++;
            }
            return count;
        }

    }

    static class InputReader {
        public BufferedReader reader;
        public StringTokenizer tokenizer;

        public InputReader(InputStream stream) {
            reader = new BufferedReader(new InputStreamReader(stream), 32768);
            tokenizer = null;
        }

        public String next() {
            while (tokenizer == null || !tokenizer.hasMoreTokens()) {
                try {
                    tokenizer = new StringTokenizer(reader.readLine());
                } catch (IOException e) {
                    throw new RuntimeException(e);
                }
            }
            return tokenizer.nextToken();
        }

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

    }
}
 import java.io.OutputStream; OutputStream java.io import java.io.IOException; IOException java.io import java.io.InputStream; InputStream java.io import java.io.PrintWriter; PrintWriter java.io import java.io.BufferedReader; BufferedReader 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) {
        InputStream inputStream = System.in;
        OutputStream outputStream = System.out;
        InputReader in = new InputReader(inputStream);
        PrintWriter out = new PrintWriter(outputStream);

        Problem solver = new Problem();
        solver.solve(0, in, out);
        out.close();
    }

    static class Problem {

        public void solve(int testNumber, InputReader in, PrintWriter out) {
            String s = in.next(), t = in.next();
            int min = t.length();
            for(int i = 0; i <= s.length() - t.length(); i++) {
                int count = getCount(s, t, i);
                min = Math.min(min, count);
            }
            out.println(min);
        }

        private int getCount(String s, String t, int idx) {
            int count = 0;
            for(int i = idx, j = 0; j < t.length(); i++, j++) {
                if(s.charAt(i) != t.charAt(j))
                    count++;
            }
            return count;
        }

    }

    static class InputReader {
        public BufferedReader reader;
        public StringTokenizer tokenizer;

        public InputReader(InputStream stream) {
            reader = new BufferedReader(new InputStreamReader(stream), 32768);
            tokenizer = null;
        }

        public String next() {
            while (tokenizer == null || !tokenizer.hasMoreTokens()) {
                try {
                    tokenizer = new StringTokenizer(reader.readLine());
                } catch (IOException e) {
                    throw new RuntimeException(e);
                }
            }
            return tokenizer.nextToken();
        }

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

    }
} Main public static void main(String[] args) {
        InputStream inputStream = System.in;
        OutputStream outputStream = System.out;
        InputReader in = new InputReader(inputStream);
        PrintWriter out = new PrintWriter(outputStream);

        Problem solver = new Problem();
        solver.solve(0, in, out);
        out.close();
    } main {
        InputStream inputStream = System.in;
        OutputStream outputStream = System.out;
        InputReader in = new InputReader(inputStream);
        PrintWriter out = new PrintWriter(outputStream);

        Problem solver = new Problem();
        solver.solve(0, in, out);
        out.close();
    } InputStream inputStream = System.in; inputStream System.in System System.in OutputStream outputStream = System.out; outputStream System.out System System.out InputReader in = new InputReader(inputStream); in new InputReader(inputStream) PrintWriter out = new PrintWriter(outputStream); out new PrintWriter(outputStream) Problem solver = new Problem(); solver new Problem() solver.solve(0, in, out) solver.solve solver 0 in out out.close() out.close out String[] args args static class Problem {

        public void solve(int testNumber, InputReader in, PrintWriter out) {
            String s = in.next(), t = in.next();
            int min = t.length();
            for(int i = 0; i <= s.length() - t.length(); i++) {
                int count = getCount(s, t, i);
                min = Math.min(min, count);
            }
            out.println(min);
        }

        private int getCount(String s, String t, int idx) {
            int count = 0;
            for(int i = idx, j = 0; j < t.length(); i++, j++) {
                if(s.charAt(i) != t.charAt(j))
                    count++;
            }
            return count;
        }

    } Problem public void solve(int testNumber, InputReader in, PrintWriter out) {
            String s = in.next(), t = in.next();
            int min = t.length();
            for(int i = 0; i <= s.length() - t.length(); i++) {
                int count = getCount(s, t, i);
                min = Math.min(min, count);
            }
            out.println(min);
        } solve {
            String s = in.next(), t = in.next();
            int min = t.length();
            for(int i = 0; i <= s.length() - t.length(); i++) {
                int count = getCount(s, t, i);
                min = Math.min(min, count);
            }
            out.println(min);
        } String s = in.next() s in.next() in.next in t = in.next(); t in.next() in.next in int min = t.length(); min t.length() t.length t for(int i = 0; i <= s.length() - t.length(); i++) {
                int count = getCount(s, t, i);
                min = Math.min(min, count);
            } int i = 0; int i = 0; i 0 i <= s.length() - t.length() i s.length() - t.length() s.length() s.length s t.length() t.length t i++ i++ i {
                int count = getCount(s, t, i);
                min = Math.min(min, count);
            } {
                int count = getCount(s, t, i);
                min = Math.min(min, count);
            } int count = getCount(s, t, i); count getCount(s, t, i) getCount s t i min = Math.min(min, count) min Math.min(min, count) Math.min Math min count out.println(min) out.println out min int testNumber testNumber InputReader in in PrintWriter out out private int getCount(String s, String t, int idx) {
            int count = 0;
            for(int i = idx, j = 0; j < t.length(); i++, j++) {
                if(s.charAt(i) != t.charAt(j))
                    count++;
            }
            return count;
        } getCount {
            int count = 0;
            for(int i = idx, j = 0; j < t.length(); i++, j++) {
                if(s.charAt(i) != t.charAt(j))
                    count++;
            }
            return count;
        } int count = 0; count 0 for(int i = idx, j = 0; j < t.length(); i++, j++) {
                if(s.charAt(i) != t.charAt(j))
                    count++;
            } int i = idx, j = 0; int i = idx i idx j = 0; j 0 j < t.length() j t.length() t.length t i++, j++ i++ i j++ j {
                if(s.charAt(i) != t.charAt(j))
                    count++;
            } {
                if(s.charAt(i) != t.charAt(j))
                    count++;
            } if(s.charAt(i) != t.charAt(j))
                    count++; s.charAt(i) != t.charAt(j) s.charAt(i) s.charAt s i t.charAt(j) t.charAt t j count++ count return count; count String s s String t t int idx idx static class InputReader {
        public BufferedReader reader;
        public StringTokenizer tokenizer;

        public InputReader(InputStream stream) {
            reader = new BufferedReader(new InputStreamReader(stream), 32768);
            tokenizer = null;
        }

        public String next() {
            while (tokenizer == null || !tokenizer.hasMoreTokens()) {
                try {
                    tokenizer = new StringTokenizer(reader.readLine());
                } catch (IOException e) {
                    throw new RuntimeException(e);
                }
            }
            return tokenizer.nextToken();
        }

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

    } InputReader public BufferedReader reader; reader public StringTokenizer tokenizer; tokenizer public InputReader(InputStream stream) {
            reader = new BufferedReader(new InputStreamReader(stream), 32768);
            tokenizer = null;
        } InputReader {
            reader = new BufferedReader(new InputStreamReader(stream), 32768);
            tokenizer = null;
        } reader = new BufferedReader(new InputStreamReader(stream), 32768) reader new BufferedReader(new InputStreamReader(stream), 32768) tokenizer = null tokenizer null InputStream stream stream public String next() {
            while (tokenizer == null || !tokenizer.hasMoreTokens()) {
                try {
                    tokenizer = new StringTokenizer(reader.readLine());
                } catch (IOException e) {
                    throw new RuntimeException(e);
                }
            }
            return tokenizer.nextToken();
        } next {
            while (tokenizer == null || !tokenizer.hasMoreTokens()) {
                try {
                    tokenizer = new StringTokenizer(reader.readLine());
                } catch (IOException e) {
                    throw new RuntimeException(e);
                }
            }
            return tokenizer.nextToken();
        } while (tokenizer == null || !tokenizer.hasMoreTokens()) {
                try {
                    tokenizer = new StringTokenizer(reader.readLine());
                } catch (IOException e) {
                    throw new RuntimeException(e);
                }
            } tokenizer == null || !tokenizer.hasMoreTokens() tokenizer == null tokenizer null !tokenizer.hasMoreTokens() tokenizer.hasMoreTokens() tokenizer.hasMoreTokens tokenizer {
                try {
                    tokenizer = new StringTokenizer(reader.readLine());
                } catch (IOException e) {
                    throw new RuntimeException(e);
                }
            } try {
                    tokenizer = new StringTokenizer(reader.readLine());
                } catch (IOException e) {
                    throw new RuntimeException(e);
                } catch (IOException e) {
                    throw new RuntimeException(e);
                } IOException e {
                    throw new RuntimeException(e);
                } throw new RuntimeException(e); new RuntimeException(e) {
                    tokenizer = new StringTokenizer(reader.readLine());
                } tokenizer = new StringTokenizer(reader.readLine()) tokenizer new StringTokenizer(reader.readLine()) return tokenizer.nextToken(); tokenizer.nextToken() tokenizer.nextToken tokenizer public int nextInt() {
            return Integer.parseInt(next());
        } nextInt {
            return Integer.parseInt(next());
        } return Integer.parseInt(next()); Integer.parseInt(next()) Integer.parseInt Integer next() next public class Main {
    public static void main(String[] args) {
        InputStream inputStream = System.in;
        OutputStream outputStream = System.out;
        InputReader in = new InputReader(inputStream);
        PrintWriter out = new PrintWriter(outputStream);

        Problem solver = new Problem();
        solver.solve(0, in, out);
        out.close();
    }

    static class Problem {

        public void solve(int testNumber, InputReader in, PrintWriter out) {
            String s = in.next(), t = in.next();
            int min = t.length();
            for(int i = 0; i <= s.length() - t.length(); i++) {
                int count = getCount(s, t, i);
                min = Math.min(min, count);
            }
            out.println(min);
        }

        private int getCount(String s, String t, int idx) {
            int count = 0;
            for(int i = idx, j = 0; j < t.length(); i++, j++) {
                if(s.charAt(i) != t.charAt(j))
                    count++;
            }
            return count;
        }

    }

    static class InputReader {
        public BufferedReader reader;
        public StringTokenizer tokenizer;

        public InputReader(InputStream stream) {
            reader = new BufferedReader(new InputStreamReader(stream), 32768);
            tokenizer = null;
        }

        public String next() {
            while (tokenizer == null || !tokenizer.hasMoreTokens()) {
                try {
                    tokenizer = new StringTokenizer(reader.readLine());
                } catch (IOException e) {
                    throw new RuntimeException(e);
                }
            }
            return tokenizer.nextToken();
        }

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

    }
} public class Main {
    public static void main(String[] args) {
        InputStream inputStream = System.in;
        OutputStream outputStream = System.out;
        InputReader in = new InputReader(inputStream);
        PrintWriter out = new PrintWriter(outputStream);

        Problem solver = new Problem();
        solver.solve(0, in, out);
        out.close();
    }

    static class Problem {

        public void solve(int testNumber, InputReader in, PrintWriter out) {
            String s = in.next(), t = in.next();
            int min = t.length();
            for(int i = 0; i <= s.length() - t.length(); i++) {
                int count = getCount(s, t, i);
                min = Math.min(min, count);
            }
            out.println(min);
        }

        private int getCount(String s, String t, int idx) {
            int count = 0;
            for(int i = idx, j = 0; j < t.length(); i++, j++) {
                if(s.charAt(i) != t.charAt(j))
                    count++;
            }
            return count;
        }

    }

    static class InputReader {
        public BufferedReader reader;
        public StringTokenizer tokenizer;

        public InputReader(InputStream stream) {
            reader = new BufferedReader(new InputStreamReader(stream), 32768);
            tokenizer = null;
        }

        public String next() {
            while (tokenizer == null || !tokenizer.hasMoreTokens()) {
                try {
                    tokenizer = new StringTokenizer(reader.readLine());
                } catch (IOException e) {
                    throw new RuntimeException(e);
                }
            }
            return tokenizer.nextToken();
        }

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

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

public class Main {
    public static void main(String[] args) {
        InputStream inputStream = System.in;
        OutputStream outputStream = System.out;
        InputReader in = new InputReader(inputStream);
        PrintWriter out = new PrintWriter(outputStream);

        Problem solver = new Problem();
        solver.solve(0, in, out);
        out.close();
    }

    static class Problem {

        public void solve(int testNumber, InputReader in, PrintWriter out) {
            String s = in.next(), t = in.next();
            int min = t.length();
            for(int i = 0; i <= s.length() - t.length(); i++) {
                int count = getCount(s, t, i);
                min = Math.min(min, count);
            }
            out.println(min);
        }

        private int getCount(String s, String t, int idx) {
            int count = 0;
            for(int i = idx, j = 0; j < t.length(); i++, j++) {
                if(s.charAt(i) != t.charAt(j))
                    count++;
            }
            return count;
        }

    }

    static class InputReader {
        public BufferedReader reader;
        public StringTokenizer tokenizer;

        public InputReader(InputStream stream) {
            reader = new BufferedReader(new InputStreamReader(stream), 32768);
            tokenizer = null;
        }

        public String next() {
            while (tokenizer == null || !tokenizer.hasMoreTokens()) {
                try {
                    tokenizer = new StringTokenizer(reader.readLine());
                } catch (IOException e) {
                    throw new RuntimeException(e);
                }
            }
            return tokenizer.nextToken();
        }

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

    }
}

