
import java.util.Arrays;
import java.util.Scanner;

public class Main {

    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        String s = in.next();
        String t = in.next(); // s muss t enthaalen
        int count = 0;
        int min = 9999;
        for (int i = 0; i <= s.length()-t.length(); i++) {
            count = 0;
            for (int j = 0; j < t.length(); j++) {
                if(s.charAt(i+j)==t.charAt(j)){
                    
                } else {
                    count++;
                    
                }
   
            }
            if(min>count){
                min = count;
            }
        }
        if(s.contains(t)){
            System.out.println(0);
        } else
        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