import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

class Main {
    public static void main(String[] args) throws IOException {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        String s = br.readLine();
        String t = br.readLine();
        int ans = Integer.MAX_VALUE;
        for (int i = 0; i < s.length(); i++) {
            int misMatchCount = 0;
            boolean  flag = true;
            for (int j = 0; j < t.length(); j++) {
                if(i + j >= s.length()){
                    flag = false;
                    break;
                }
                if(s.charAt(i+ j) != t.charAt(j)) {
                    ++misMatchCount;
                }
            }
            if(flag)
                ans = Math.min(ans,misMatchCount);
        }
        System.out.println(ans);
    }
}

/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