import java.awt.*;
import java.io.*;
import java.util.*;
 
public class Main {
	Scanner sc = new Scanner(System.in);
	public static void main(String[] args){
		new Main();
	}
	public Main(){
		new TestB().doIt();
	}
	class TestB{
		void doIt() {
			String S = sc.next();
			String T = sc.next();
			char SubT[] = T.toCharArray();
			int lengthS = S.length();
			int lengthT = T.length();
			int length = lengthS - lengthT;
			int min = 10000;
			for(int i = 0;i <= length;i++){
//				System.out.println(S.substring(i,i + lengthT));
				char SubS[] = S.substring(i,i + lengthT).toCharArray();
				int count = 0;
				for(int j = 0;j < lengthT;j++) {
					if(SubS[j] != SubT[j]) {
						count++;
					}
				}
				min = Math.min(min,count);
			}
			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