import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        String S = scanner.next();
        String T = scanner.next();

        scanner.close();

        int ans = Integer.MAX_VALUE;
        if (S.contains(T)) {
            System.out.println(0);
            return;
        }

        int i = 0;
        while (true) {
            int temp = 0;
            for (int j = 0; j < T.length(); j++) {
                if (S.charAt(i + j) != T.charAt(j)) {
                    temp++;
                }
            }
            if (temp < ans) {
                ans = temp;
            }

            if (i >= S.length() - T.length()) {
                break;
            } else {
                i++;
            }
        }

        System.out.println(ans);
    }

}

/tmp/hf-datasets-cache/medium/datasets/42704881117311-config-parquet-and-info-qiankunmu-Project_CodeNet-896c9d36/hub/datasets--qiankunmu--Project_CodeNet_Python800_and_Java250/snapshots/c899fde44a77ba1cc14973ed3de064e4ff3aadc7/Project_CodeNet_Java250.tar.gz