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: Wrong Answer)

using System;
using System.Linq;
namespace ConsoleApp68
{
    class Program
    {
        static void Main(string[] args)
        {

            //var ret = 0;

            // var l = Console.ReadLine().Split(' ').Select(double.Parse).ToArray();
            var l = Console.ReadLine();
            var l2 = Console.ReadLine();

            int ret =  10000;
            for ( var i = 0; i< l2.Length; i++)
            {
                var n = check(l,l2,i);
                if (ret > n)
                {
                    ret = n;
                };
            }

            Console.WriteLine(ret);
        }
        static int check(string s,string n, int idx)
        {
            var n2 = n.Substring(idx, n.Length - idx);
            var n3 = n.Substring(0, n.Length - idx);
            var s2 = s.Substring(idx, s.Length - idx);
            var s3 = s.Substring(0, s.Length - idx);
            if ( s3.IndexOf(n2) != -1 || s2.IndexOf(n3)!= -1)
            {
                return idx;
            }else
            {
                return n.Length;
            }
        }
    }
}