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

public class Main {
    public static void main(String[] args) {
        FastInput in = new FastInput();
        PrintWriter out = new PrintWriter(System.out);

        String s = in.next(), t = in.next();
        int res = t.length();

        for (int i = 0; i + t.length() <= s.length(); i++) {
            int same = 0;
            for (int j = 0; j < t.length(); j++)
                if (t.charAt(j) == s.charAt(i + j))
                    same++;
            res = Math.min(res, t.length() - same);
        }
        out.println(res);
        out.close();
    }

    static class FastInput {
        BufferedReader br;
        StringTokenizer st;

        public FastInput() {
            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.io.BufferedReader; BufferedReader java.io import java.io.IOException; IOException java.io import java.io.InputStreamReader; InputStreamReader java.io import java.io.PrintWriter; PrintWriter java.io import java.util.StringTokenizer; StringTokenizer java.util public class Main {
    public static void main(String[] args) {
        FastInput in = new FastInput();
        PrintWriter out = new PrintWriter(System.out);

        String s = in.next(), t = in.next();
        int res = t.length();

        for (int i = 0; i + t.length() <= s.length(); i++) {
            int same = 0;
            for (int j = 0; j < t.length(); j++)
                if (t.charAt(j) == s.charAt(i + j))
                    same++;
            res = Math.min(res, t.length() - same);
        }
        out.println(res);
        out.close();
    }

    static class FastInput {
        BufferedReader br;
        StringTokenizer st;

        public FastInput() {
            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) {
        FastInput in = new FastInput();
        PrintWriter out = new PrintWriter(System.out);

        String s = in.next(), t = in.next();
        int res = t.length();

        for (int i = 0; i + t.length() <= s.length(); i++) {
            int same = 0;
            for (int j = 0; j < t.length(); j++)
                if (t.charAt(j) == s.charAt(i + j))
                    same++;
            res = Math.min(res, t.length() - same);
        }
        out.println(res);
        out.close();
    } main {
        FastInput in = new FastInput();
        PrintWriter out = new PrintWriter(System.out);

        String s = in.next(), t = in.next();
        int res = t.length();

        for (int i = 0; i + t.length() <= s.length(); i++) {
            int same = 0;
            for (int j = 0; j < t.length(); j++)
                if (t.charAt(j) == s.charAt(i + j))
                    same++;
            res = Math.min(res, t.length() - same);
        }
        out.println(res);
        out.close();
    } FastInput in = new FastInput(); in new FastInput() PrintWriter out = new PrintWriter(System.out); out new PrintWriter(System.out) String s = in.next() s in.next() in.next in t = in.next(); t in.next() in.next in int res = t.length(); res t.length() t.length t for (int i = 0; i + t.length() <= s.length(); i++) {
            int same = 0;
            for (int j = 0; j < t.length(); j++)
                if (t.charAt(j) == s.charAt(i + j))
                    same++;
            res = Math.min(res, t.length() - same);
        } int i = 0; int i = 0; i 0 i + t.length() <= s.length() i + t.length() i t.length() t.length t s.length() s.length s i++ i++ i {
            int same = 0;
            for (int j = 0; j < t.length(); j++)
                if (t.charAt(j) == s.charAt(i + j))
                    same++;
            res = Math.min(res, t.length() - same);
        } {
            int same = 0;
            for (int j = 0; j < t.length(); j++)
                if (t.charAt(j) == s.charAt(i + j))
                    same++;
            res = Math.min(res, t.length() - same);
        } int same = 0; same 0 for (int j = 0; j < t.length(); j++)
                if (t.charAt(j) == s.charAt(i + j))
                    same++; int j = 0; int j = 0; j 0 j < t.length() j t.length() t.length t j++ j++ j if (t.charAt(j) == s.charAt(i + j))
                    same++; if (t.charAt(j) == s.charAt(i + j))
                    same++; t.charAt(j) == s.charAt(i + j) t.charAt(j) t.charAt t j s.charAt(i + j) s.charAt s i + j i j same++ same res = Math.min(res, t.length() - same) res Math.min(res, t.length() - same) Math.min Math res t.length() - same t.length() t.length t same out.println(res) out.println out res out.close() out.close out String[] args args static class FastInput {
        BufferedReader br;
        StringTokenizer st;

        public FastInput() {
            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;
        }
    } FastInput BufferedReader br; br StringTokenizer st; st public FastInput() {
            br = new BufferedReader(new InputStreamReader(System.in));
        } FastInput {
            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) {
        FastInput in = new FastInput();
        PrintWriter out = new PrintWriter(System.out);

        String s = in.next(), t = in.next();
        int res = t.length();

        for (int i = 0; i + t.length() <= s.length(); i++) {
            int same = 0;
            for (int j = 0; j < t.length(); j++)
                if (t.charAt(j) == s.charAt(i + j))
                    same++;
            res = Math.min(res, t.length() - same);
        }
        out.println(res);
        out.close();
    }

    static class FastInput {
        BufferedReader br;
        StringTokenizer st;

        public FastInput() {
            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) {
        FastInput in = new FastInput();
        PrintWriter out = new PrintWriter(System.out);

        String s = in.next(), t = in.next();
        int res = t.length();

        for (int i = 0; i + t.length() <= s.length(); i++) {
            int same = 0;
            for (int j = 0; j < t.length(); j++)
                if (t.charAt(j) == s.charAt(i + j))
                    same++;
            res = Math.min(res, t.length() - same);
        }
        out.println(res);
        out.close();
    }

    static class FastInput {
        BufferedReader br;
        StringTokenizer st;

        public FastInput() {
            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.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.util.StringTokenizer;

public class Main {
    public static void main(String[] args) {
        FastInput in = new FastInput();
        PrintWriter out = new PrintWriter(System.out);

        String s = in.next(), t = in.next();
        int res = t.length();

        for (int i = 0; i + t.length() <= s.length(); i++) {
            int same = 0;
            for (int j = 0; j < t.length(); j++)
                if (t.charAt(j) == s.charAt(i + j))
                    same++;
            res = Math.min(res, t.length() - same);
        }
        out.println(res);
        out.close();
    }

    static class FastInput {
        BufferedReader br;
        StringTokenizer st;

        public FastInput() {
            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;
        }
    }
}
