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>
             
            int	main(void)
            {
              char	s[1001] = {0};
              char	t[1001] = {0};
              int	len_s = 0;
              int	len_t = 0;
              int	diff;
              int	count = 0;
              int	i = 0;
              int	j;
              
              scanf("%s\n", s);
              scanf("%s", t);
              while (s[i])
                i++;
              len_s = i;
              i = 0;
              while (s[i])
                i++;
              len_t = i;
              diff = len_t;
              i = 0;
              while (i < len_s - len_t)
              {
                j = 0;
                if (s[i] = t[j])
                {
                  count = 0;
                  while (j < len_t)
                  {
                    if (s[i + j] != t[j])
                      count++;
                    j++;
                  }
                  if (diff > count)
                    diff = count;
                }
                i++;
              }
              printf("%d", diff);
              return (0);
            }