import java.util.*;
public class Main{
	public static void main(String args[]){
		Scanner sc = new Scanner(System.in);
		String S = sc.next();
		String T = sc.next();
		int counter = 0;
		for(int i = 0;i < (S.length() - T.length() + 1);i++){
			int count2 = 0;
			for(int j = 0;j < T.length();j++){
				if(S.charAt(i + j) == T.charAt(j)){
					count2++;
				}
			}
			counter = Math.max(counter,count2);
		}
		System.out.println(T.length() - counter);
	}
}
/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