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 maxSame = 0;
    for (int i = 0; i < s.length()-t.length()+1; i++) {
      String sPart = s.substring(i, i+t.length());
      int count = 0;
      for (int j = 0; j < t.length(); j++) {
        if (sPart.charAt(j) == t.charAt(j)) count++;
      }
      maxSame = Math.max(maxSame, count);
    }
    System.out.println(t.length() - maxSame);
  }
}

/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