18989번 - Product 다국어언어 제한

문제

Warning: Pay attention to the unusual memory limit.

You are given $k$ prime numbers $p_1, p_2 \dots, p_k$ and an integer $N$. Your task is to find the largest integer not exceeding $N$ whose prime factorization contains only these prime numbers.

For example, if the prime numbers are 2,ドル 3, 7,ドル the set of numbers whose factorization contains only these primes is $\{1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 16, 18, 21, 24, 27, 28, 32, 36, 42, 48, 49, 54, 56, 63, 64, 72, 81, 84, 96, 98, \ldots \}$.

입력

The first line of the input contains two integers $k, N$ ($k \ge 1,ドル 1ドル \le N \le 10^{18}$) described above. The second line contains $k$ distinct prime numbers $p_1, \dots, p_k$ (2ドル \le p_i \le 100$).

출력

You should output a single positive integer -- the largest number not exceeding $N$ whose prime factorization contains only prime numbers $p_1, p_2, \dots, p_k$.

제한

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