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: Runtime Error)

#include<stdio.h>
#include<string.h>
int main(){
 	int a,b,c,i;	
  	int ans = 99999;
  	int tmp = 0;
  char s[9999];
  char t[9999];
 	int sl,tl;
  
  scanf("%s",s);
  scanf("%s",t);
  
  sl = strlen(s);
  tl = strlen(t);
  
  for(i=0;i<sl-tl+1;i++){
    b=0;
    for(a=0;a<tl;a++){
      if(strcmp(s[i],t[a])!=0){
       b++; 
      }
    }
    if(b<=ans){
      ans=b;
    }
  }
  
  printf("%d",ans);
  return 0;
}