import java.util.*;
 
public class Main {
	public static void main (String[] args) {
		Scanner sc = new Scanner(System.in);
        String S = sc.nextLine();
      	String T = sc.nextLine();
      	int max = Integer.MIN_VALUE;
      int s = S.length();
      int t = T.length();
      if(s<t) return;
      for(int i=0; i<=s-t; i++){
        int count = 0;
        for(int j=0; j<t; j++){
          if(S.charAt(i+j) == T.charAt(j)) count++;
        }
        max = Math.max(max, count);
      }
      	System.out.println(t - 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