import java.util.*;
public class Main{
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        char[] s = sc.next().toCharArray();
        char[] t = sc.next().toCharArray();
        int unmatch = 0;
        int unmatch_min = 1000;
        int cyc_max=s.length-t.length;
        for (int i=0; i<=cyc_max; i++){
            unmatch=0;
            for (int j=0; j<t.length; j++){
                if (!(s[i+j]==t[j])) unmatch++;
              	if (unmatch>=unmatch_min) break;
            }
            if (unmatch<unmatch_min) unmatch_min=unmatch;
        }

        System.out.println(unmatch_min);
    }
}
/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