import java.util.Scanner;

public class Main {

	public static void main(String[] args) {

		Scanner scan = new Scanner(System.in);

		String S = scan.next();
		String T = scan.next();

		int count = 0;
		int maxCount = 0;

	  if(S.length() == T.length())
	  {
		  for(int i = 0; i < S.length(); i++) {
				if((S.charAt(i) == T.charAt(i)))
				{
					maxCount++;
				}
			}
	  }
	  else
	  {
      for(int x = 0; x < S.length() - T.length(); x++) {
		for(int i = 0; i < T.length(); i++) {
			if((S.charAt(i + x) == T.charAt(i)))
			{
				count++;
			}
		}
		if(count > maxCount) {
			maxCount = count;
		}
		count = 0;
      	}
      }
		System.out.println(T.length() - maxCount);
		scan.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