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();
        char[] chS = s.toCharArray();
        char[] chT = t.toCharArray();
        int min = t.length(); 
        for (int i = 0; i <= s.length() - t.length(); i++) {
            int cur = 0; 
            for (int j = 0; j < t.length(); j++) {
                    if (chS[i + j] != chT[j]) {
                        cur++;
                    } 
            }
            min = Math.min(min, cur);
        }
        System.out.println(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