import java.util.*; 
import java.lang.*; 


public class Main{
	public static void main(String[] args){
		Scanner scan = new Scanner(System.in);
                
                String S = scan.next();
                String T = scan.next();
               
                int nagasa = T.length();
                
                int ans = 10000;
                
                for(int i=0; i<=S.length()-nagasa; i++){
                    int kotonaru = 0;
                    int cnt=0;
                    while(cnt<T.length()){
                        if(S.charAt(i+cnt)!=T.charAt(cnt)){
                            kotonaru++;
                        }
                        cnt++;
                    }
                
                    ans = Math.min(kotonaru, ans);
                }
                
                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