import java.util.Scanner;

public class Main {
    public static void main(String[] args){
        Scanner stdIn = new Scanner(System.in);

        String s = stdIn.nextLine();
        String t = stdIn.nextLine();
        int c = 0;
        int x = t.length();
        for(int i = 0 ; i < (s.length() - t.length()) + 1 ; i++){
            for(int j = 0 ; j < t.length() ; j++){
                if(t.charAt(j) != s.charAt(i + j)){
                    c += 1;
                }
            }
            if(x > c){
                x = c;
            }
            c = 0;
        }
        System.out.println(x);
    }
}

/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