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 PyPy3 (7.3.0) (judge verdict: Wrong Answer)

from collections import deque
import sys, copy, itertools,heapq
input = sys.stdin.readline
 
S = input()
T = input()
s = len(S)
t = len(T)
ANS=[0]*(len(S))
 
for i in range(len(S)-len(T)):
  for j in range(len(T)):
    if S[i+j] == T[j]:
      ANS[i] += 1

ans = t- max(ANS)

#print(s)
#print(t)
#print(ANS)
print(ans)