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 <stdio.h>
#include <string.h>

int main(){
  char s[1010], t[1010];
  scanf("%s %s", s, t);
  int i, j, count = 0, high = 0;

  for(j = 0; j < (strlen(s) - strlen(t)); j++){
    for(i = j; i < (strlen(t) + j); i++){
      if(s[i] == t[i - j]){
        count++;
      }
    }
    if(count >= high){
      high = count;
    }
    count = 0;
  }

  printf("%d\n", strlen(t) - high);
  return 0;
}