import java.util.Map.Entry;
import java.lang.reflect.Method;
import java.util.*;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.util.ArrayDeque;
import java.util.Arrays;
import java.util.Deque;
import java.util.ArrayList;

//import org.w3c.dom.css.Counter;


public class Main {
	public static void main(String[] args)throws Exception{
		Scanner sc = new Scanner(System.in);
		String S = sc.next();
        String T = sc.next();
        int ans =999999;
		for(int i=0;i<S.length()-T.length()+1;i++){
			int tmp=0;
			for(int i2=0;i2<T.length();i2++){
				if(T.charAt(i2)!=S.charAt(i2+i)){
                    tmp++;
                }
			}
			if(ans>tmp){ans=tmp;}
		}
        System.out.println(ans);
    }
}
/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