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(); i++) {
			int match = 0;
			for (int j = 0; j < t.length(); j++) {
				if (t.charAt(j) == s.charAt(i + j)) {
					match++;
				}
			}
			if (max < match) {
				max = match;
			}
		}
		System.out.println(t.length() - max);
	}
}
/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