import java.util.*;
public class Main {
    public static void main(String args[]) {
        Scanner in=new Scanner(System.in);
        char s[]=in.next().toCharArray(),t[]=in.next().toCharArray();;
        int n=s.length,l=t.length,max=l,cnt=0;
        for(int i=0;i<n-l+1;i++){
            cnt=0;
            for(int j=0;j<l;j++){
                if(s[i+j]!=t[j])    cnt++;
            }
            max=Math.min(max,cnt);
        }
        System.out.println(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