
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 min=1000000000;
		int sum=0;
		for(int i=0;i<s.length()-(t.length()-1);i++)
		{
			sum=0;
			for(int j=0;j<t.length();j++)
			{
				if(s.charAt(i+j)!=t.charAt(j)) sum++;
			}
			//System.out.println(sum);
			min=Math.min(min, sum);
			
		}
		System.out.println(min);
	}
}

/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