import java.util.Scanner;

public class Main {
	public static void main(String[] args){
		try(Scanner sc = new Scanner(System.in)) {
			
			String s = sc.next();
			String t = sc.next();
			
			
			char[] sChar = s.toCharArray();
			char[] tChar = t.toCharArray();
			
			int len = tChar.length;
			for(int i = 0 ; i < s.length() - t.length() + 1; i++ ) {
				
				int cLen = 0;
				for(int j = 0 ; j < t.length() ; j++ ) {
					if ( sChar[i+j] != tChar[j]) {
						cLen++;
					}
					
				}
				
				if ( cLen < len ) {
					len = cLen;
				}
			}
			
			System.out.println(len);
		
		}
	}

}
/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