CF317D.Game with Powers
普及/提高-
通过率:0%
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题目描述
Vasya and Petya wrote down all integers from 1 to n to play the "powers" game ( n can be quite large; however, Vasya and Petya are not confused by this fact).
Players choose numbers in turn (Vasya chooses first). If some number x is chosen at the current turn, it is forbidden to choose x or all of its other positive integer powers (that is, x2 , x3 , ... ) at the next turns. For instance, if the number 9 is chosen at the first turn, one cannot choose 9 or 81 later, while it is still allowed to choose 3 or 27 . The one who cannot make a move loses.
Who wins if both Vasya and Petya play optimally?
输入格式
Input contains single integer n ( 1<=n<=109 ).
输出格式
Print the name of the winner — "Vasya" or "Petya" (without quotes).
输入输出样例
输入#1
1
输出#1
Vasya
输入#2
2
输出#2
Petya
输入#3
8
输出#3
Petya
说明/提示
In the first sample Vasya will choose 1 and win immediately.
In the second sample no matter which number Vasya chooses during his first turn, Petya can choose the remaining number and win.