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: Accepted)

#include <iostream>
#include <algorithm>
#include <vector>
#include <map>
#include <queue>
#include <stack>
#include <math.h>
#include <string>
#include <limits.h>
#include <iomanip>
#include <deque>
#include <bitset>
#include <iterator>
#include <list>
#include <set>
#include <bitset>
#include <unordered_map>
#include <string.h>
#define fastIo                        \
    ios_base::sync_with_stdio(false); \
    cin.tie(NULL)
#define ll long long
#define ff first
#define ss second
#define pb push_back
#define ppb pop_back
#define mp make_pair
#define MOD 1000000007

using namespace std;
int main()
{
    fastIo;
    string s,t;
    cin>>s>>t;

    int ans = INT_MAX;
    for(int i =0;i<=(s.length()-t.length());i++)
    {
        int m =0;
        for(int j=0;j<t.length();j++)
        {
            if(s[i+j]!=t[j])
                m++;
        }
        ans = min(ans,m);

    }
    cout<<ans<<endl;

    

   
    return 0;
}