Package for this problem was not updated by the problem writer or Codeforces administration after we’ve upgraded the judging servers. To adjust the time limit constraint, solution execution time will be multiplied by 2. For example, if your solution works for 400 ms on judging servers, then value 800 ms will be displayed and used to determine the verdict.

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B. Correct Solution?

time limit per test

2 secondsmemory limit per test

256 megabytesinput

standard inputoutput

standard outputOne cold winter evening Alice and her older brother Bob was sitting at home near the fireplace and giving each other interesting problems to solve. When it was Alice's turn, she told the number *n* to Bob and said:

—Shuffle the digits in this number in order to obtain the smallest possible number without leading zeroes.

—No problem! — said Bob and immediately gave her an answer.

Alice said a random number, so she doesn't know whether Bob's answer is correct. Help her to find this out, because impatient brother is waiting for the verdict.

Input

The first line contains one integer *n* (0 ≤ *n* ≤ 10^{9}) without leading zeroes. The second lines contains one integer *m* (0 ≤ *m* ≤ 10^{9}) — Bob's answer, possibly with leading zeroes.

Output

Print OK if Bob's answer is correct and WRONG_ANSWER otherwise.

Examples

Input

3310

1033

Output

OK

Input

4

5

Output

WRONG_ANSWER

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