import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		String s = sc.next();
		String t = sc.next();

		int max = 0;
		for (int i = 0; i < s.length() -  t.length() + 1; i++) {
			String a = s.substring(i, t.length() + i);
			int cnt = 0;
			for (int j = 0; j < t.length(); j++) {
				if (a.charAt(j) == t.charAt(j)) cnt++;
			}
			max = Math.max(max, cnt);
		}

		System.out.println(t.length() - max);

		sc.close();

	}

}
/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