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