CF1382B.Sequential Nim

传统题 时间 2000 ms 内存 256 MiB 5 尝试 1 已通过 1 标签

Sequential Nim

There are nn piles of stones, where the ii-th pile has aia_i stones. Two people play a game, where they take alternating turns removing stones.

In a move, a player may remove a positive number of stones from the first non-empty pile (the pile with the minimal index, that has at least one stone). The first player who cannot make a move (because all piles are empty) loses the game. If both players play optimally, determine the winner of the game.

Input

The first line contains a single integer tt (1t10001\le t\le 1000)  — the number of test cases. Next 2t2t lines contain descriptions of test cases.

The first line of each test case contains a single integer nn (1n1051\le n\le 10^5)  — the number of piles.

The second line of each test case contains nn integers a1,,ana_1,\ldots,a_n (1ai1091\le a_i\le 10^9)  — aia_i is equal to the number of stones in the ii-th pile.

It is guaranteed that the sum of nn for all test cases does not exceed 10510^5.

Output

For each test case, if the player who makes the first move will win, output "First". Otherwise, output "Second".

Note

In the first test case, the first player will win the game. His winning strategy is:

  1. The first player should take the stones from the first pile. He will take 11 stone. The numbers of stones in piles will be [1,5,4][1, 5, 4].
  2. The second player should take the stones from the first pile. He will take 11 stone because he can't take any other number of stones. The numbers of stones in piles will be [0,5,4][0, 5, 4].
  3. The first player should take the stones from the second pile because the first pile is empty. He will take 44 stones. The numbers of stones in piles will be [0,1,4][0, 1, 4].
  4. The second player should take the stones from the second pile because the first pile is empty. He will take 11 stone because he can't take any other number of stones. The numbers of stones in piles will be [0,0,4][0, 0, 4].
  5. The first player should take the stones from the third pile because the first and second piles are empty. He will take 44 stones. The numbers of stones in piles will be [0,0,0][0, 0, 0].
  6. The second player will lose the game because all piles will be empty.

Samples

7
3
2 5 4
8
1 1 1 1 1 1 1 1
6
1 2 3 4 5 6
6
1 1 2 1 2 2
1
1000000000
5
1 2 2 1 1
3
1 1 1
First
Second
Second
First
First
Second
First

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