Problem:
Score : 200 points

Problem Statement

Given are two strings S and T.

Let us change some of the characters in S so that T will be a substring of S.

At least how many characters do we need to change?

Here, a substring is a consecutive subsequence. For example, xxx is a substring of yxxxy, but not a substring of xxyxx.

Constraints

The lengths of S and T are each at least 1 and at most 1000.

The length of T is at most that of S.

S and T consist of lowercase English letters.

Input

Input is given from Standard Input in the following format:

S
T

Output

Print the minimum number of characters in S that need to be changed.

Sample Input 1

cabacc
abc

Sample Output 1

1

For example, changing the fourth character a in S to c will match the second through fourth characters in S to T.

Since S itself does not have T as its substring, this number of changes - one - is the minimum needed.

Sample Input 2

codeforces
atcoder

Sample Output 2

6

Solution in C# (.NET Core 3.1.201) (judge verdict: Accepted)

using System;

class Program
{
    static void Main(string[] args)
    {
        string s = Console.ReadLine();
        string t = Console.ReadLine();
        int n = s.Length - t.Length;
        string[] strs = new string[n];
       

        for(int i = 0; i < n ; i++)
        {
            strs[i] = s.Substring(i,t.Length);
        }

        int HighIndex = 0;
        int max = 0;

        for (int i = 0 ; i < strs.Length; i++)
        {
            int count = 0;
            string st = strs[i];

            for(int j = 0; j < st.Length; j++)
            {
                if (st[j] == t[j])
                    count++;
            }

            if(count > max)
            {
                HighIndex = i;
                max = count;
            }
            




        }

        string high;
        if (n != 0)
            high = strs[HighIndex];
        else
            high = s;
        int ncount = 0;
        for(int i = 0; i < high.Length; i++)
        {
            if (high[i] != t[i])
                ncount++;
        }

        Console.WriteLine(ncount);


    }



}