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++ (GCC 9.2.1) (judge verdict: Wrong Answer)

#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define pb push_back
#define MOD 100000000
using pi = pair<int, int>;
int main()
{
    string  s1, s2;
    cin >> s1 >> s2;
    int mx = 0;
    for(int i = 0; i < s1.size() - s2.size(); i++)
    {
        int k = 0;
        for(int j = 0; j < s2.size(); j++)
        {
            if(s1[j] == s2[j])
                k++;
        }
        mx = max(k, mx);
    }
    cout << s2.size() - mx << endl;

}