Codeforces Round 210 (Div. 1)
E
Levko and Game
Codeforces
2800
原题
← D→
翻译中…

Levko loves sports pathfinding competitions in his city very much. In order to boost his performance, Levko spends his spare time practicing. The practice is a game.

翻译中…

The city consists of $*n*$ intersections connected by $*m* + *k*$ directed roads. Two or more roads can connect the same pair of intersections. Besides, there can be roads leading from an intersection to itself.

翻译中…

Levko and Zenyk are playing a game. First Levko stands on intersection $*s*_{1}$, and Zenyk stands on intersection $*s*_{2}$. They both want to get to intersection $*f*$. The person who does it quicker wins. If they get there at the same time, the game ends with a draw. By agreement both players start simultaneously and move with the same speed.

翻译中…

Levko wants to win very much. He knows the lengths of all the roads in the city. Also he knows that he can change the lengths of some roads (there are $*k*$ such roads at all) if he pays the government. So, the government can change the length of the $*i*$-th road to any integer value in the segment [$*l*_{*i*}$, $*r*_{*i*}$] (both borders inclusive). Levko wondered if he can reconstruct the roads so as to win the game and whether he can hope for the draw if he cannot win.

翻译中…

You should consider that both players play optimally well. It is guaranteed that we can get from intersections $*s*_{1}$ and $*s*_{2}$ to intersection $*f*$.

翻译中…

Input

翻译中…

The first line contains three integers $*n*$, $*m*$ and $*k*$ ($1 ≤ *n*, *m* ≤ 10^{4}$, $1 ≤ *k* ≤ 100$). The second line contains three integers $*s*_{1}$, $*s*_{2}$ and $*f*$ ($1 ≤ *s*_{1}, *s*_{2}, *f* ≤ *n*$).

翻译中…

The next $*m*$ lines contains the descriptions of the roads that cannot be changed by Levko. Each line contains three integers $*a*_{*i*}$, $*b*_{*i*}$ and $*c*_{*i*}$ ($1 ≤ *a*_{*i*}, *b*_{*i*} ≤ *n*, 1 ≤ *c*_{*i*} ≤ 10^{9}$), representing a road from intersection $*a*_{*i*}$ to intersection $*b*_{*i*}$ of length $*c*_{*i*}$.

翻译中…

The next $*k*$ lines contains the descriptions of the roads that can be changed by Levko. Each line contains four integers $*a*_{*i*}$, $*b*_{*i*}$, $*l*_{*i*}$ and $*r*_{*i*}$ ($1 ≤ *a*_{*i*}, *b*_{*i*} ≤ *n*, 1 ≤ *l*_{*i*} ≤ *r*_{*i*} ≤ 10^{9}$), representing a road from intersection $*a*_{*i*}$ to intersection $*b*_{*i*}$, Levko can set the road's length within limits $[*l*_{*i*}, *r*_{*i*}]$.

翻译中…

Consider all intersections numbered from 1 to $*n*$. It is guaranteed that you can get from intersections $*s*_{1}$ and $*s*_{2}$ to intersection $*f*$.

翻译中…

Output

翻译中…

In the first line print string "WIN" (without the quotes) if Levko can win this game, string "DRAW" (without the quotes) if Levko can end the game with a draw and "LOSE" (without the quotes) if he loses for sure.

翻译中…

If the answer is "WIN" or "DRAW", then print on the second line $*k*$ space-separated integers — the length of the roads Levko sets in the order they occur in the input.

翻译中…

样例

Input #1
4 1 3
1 3 4
3 2 2
1 2 1 3
2 4 1 3
3 4 1 3
Output #1
WIN
1 1 3
InputCopy OutputCopy
Input #2
4 1 3
1 3 4
3 2 2
1 2 1 3
2 4 1 3
3 4 1 2
Output #2
DRAW
1 1 2
InputCopy OutputCopy
Input #3
5 4 2
1 2 5
1 3 3
1 4 4
2 3 2
2 4 3
3 5 1 5
4 5 4 7
Output #3
LOSE
InputCopy OutputCopy
题目信息
题号
360E
时间限制
2 s
内存限制
256 MB
标签
图论
贪心
最短路

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。