import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        String s = sc.next();
        String t = sc.next();
        char[] ss = s.toCharArray();
        char[] ts = t.toCharArray();
        int ans = Integer.MAX_VALUE;
        int limit = ss.length - ts.length;
        for (int i = 0; i <= limit; i++) {
            int count  = 0;
            for (int j = 0; j < ts.length; j++) {
                if(ss[i + j] != ts[j]){
                    count++;
                }
            }
            ans = Math.min(ans,count);
        }
        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