Problem1143--取石子游戏

1143: 取石子游戏

Time Limit: 2 Sec  Memory Limit: 256 MB
Submit: 1  Solved: 1
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Description

Sample Input Copy 

2
1 1
1
2 30
197943
249832

Sample Output Copy 

Preempt.
Leapfrog.

HINT

Source/Category

ZJOI2014 NOIP 省选 高级 
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