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 ls = s.length();
		int lt = t.length();
		int ld = ls-lt;

		int chg = lt+1;
		for ( int i=0; i<=ld; i++ ) {
			int chg1 = lt;
			for ( int j=0; j<lt; j++ ) {
				if ( s.charAt(i+j)==t.charAt(j) ) chg1--;
			}
			chg = Math.min(chg, chg1);
		}
		System.out.println(chg);
	}
}
/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