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>
typedef long long ll;
using namespace std;
#define fastio ios_base::sync_with_stdio(false);cin.tie(0);
#define all(x) x.begin(),x.end()
#define pb push_back
#define pf push_front
#define ff first
#define ss second
#define vll vector<ll>
#define sll set<ll>
#define pll pair<ll, ll>
#define vpll vector<pll>
#define endl "\n"
const ll maxn = 2e5+2;

int main()
{
    fastio; //remove for interactive
    ll i, j, k, n, m, t;    

    string s,s2;

    cin>>s>>s2;

    n=s.size();m=s2.size();
    
    ll mini=100000;
    for ( i = 0; i < n; i++)
    {
        ll c=0;
        string s3=s.substr(i,m);
        for ( j = 0; j < m; j++)
        {
           if(s3[j]!=s2[j]) 
            c++;
        }
        mini=min(mini,c);
    }
    cout<<mini<<endl;    
        
    return 0;
}