Codeforces Round 659 (Div. 2)
D
GameGame
Codeforces
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原题
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Koa the Koala and her best friend want to play a game.

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The game starts with an array $a$ of length $n$ consisting of non-negative integers. Koa and her best friend move in turns and each have initially a score equal to $0$. Koa starts.

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Let's describe a move in the game:

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  • During his move, a player chooses any element of the array and removes it from this array, xor-ing it with the current score of the player. More formally: if the current score of the player is $x$ and the chosen element is $y$, his new score will be $x \oplus y$. Here $\oplus$ denotes bitwise XOR operation. Note that after a move element $y$ is removed from $a$.
  • The game ends when the array is empty.
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At the end of the game the winner is the player with the maximum score. If both players have the same score then it's a draw.

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If both players play optimally find out whether Koa will win, lose or draw the game.

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Input

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Each test contains multiple test cases. The first line contains $t$ ($1 \le t \le 10^4$) — the number of test cases. Description of the test cases follows.

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The first line of each test case contains the integer $n$ ($1 \le n \le 10^5$) — the length of $a$.

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The second line of each test case contains $n$ integers $a_1, a_2, \ldots, a_n$ ($0 \le a_i \le 10^9$) — elements of $a$.

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It is guaranteed that the sum of $n$ over all test cases does not exceed $10^5$.

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Output

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For each test case print:

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  • WIN if Koa will win the game.
  • LOSE if Koa will lose the game.
  • DRAW if the game ends in a draw.
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Note

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In testcase $1$ of the first sample we have:

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$a = [1, 2, 2]$. Here Koa chooses $1$, other player has to choose $2$, Koa chooses another $2$. Score for Koa is $1 \oplus 2 = 3$ and score for other player is $2$ so Koa wins.

翻译中…

样例

Input #1
3
3
1 2 2
3
2 2 3
5
0 0 0 2 2
Output #1
WIN
LOSE
DRAW
InputCopy OutputCopy
Input #2
4
5
4 1 5 1 3
4
1 0 1 6
1
0
2
5 4
Output #2
WIN
WIN
DRAW
WIN
InputCopy OutputCopy
题目信息
题号
1384D
时间限制
1 s
内存限制
256 MB

题面与样例版权归 Codeforces 及出题人所有;中文翻译由 AI 生成(CI 管线),如有出入请以原文为准。