import java.util.*;
public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        String S = sc.next();
        String T = sc.next();
        int max = 0;
        for (int i = 0;i < S.length()-T.length()+1 ; i++){
             int cnt = 0;
            String test = S.substring(i,i+T.length());
            for (int ind = 0; ind<T.length();ind++){
                if (test.charAt(ind)==T.charAt(ind)){
                    cnt++;
                }
            }
            if (max<cnt){
                max=cnt;
            }
        }
        System.out.println(T.length()-max);
    }
}
/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