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 <string.h>
int main()
{
  char s[1001], t[1001];
  scanf("%s %s", s, t);
  int i, j;
  int tlen = strlen(t);
  int ans = tlen;
  int cnt;
  for (i = 0; s[i] != '\0'; i++)
  {
    cnt = 0;
    for (j = 0; t[j] != '\0'; j++)
    {
      if (s[i + j] != t[j])
        cnt++;
    }
    if (cnt < ans)
      ans = cnt;
  }
  printf("%d", ans);
}