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    Statements

    Alice and Bob play the following game. They choose a number N to play with. The rules are as follows:

    - They write each number from 1 to N on a paper and put all these papers in a jar.

    - Alice plays first, and the two players alternate.

    - In his/her turn, a player can select any available number M and remove its divisors including M.

    - The person who cannot make a move in his/her turn wins the game.

    Assuming both players play optimally, you are asked the following question: who wins the game?

    Input

    The first line contains the number of test cases T (1  ≤  T  ≤  20). Each of the next T lines contains an integer (1  ≤  N  ≤  1,000,000,000).

    Output

    Output T lines, one for each test case, containing Alice if Alice wins the game, or Bob otherwise.

    Example

     
    Input
    2
    5
    1
     
    Output
    Alice
    Bob

     1 #include <iostream>
     2 #include <stdio.h>
     3 using namespace std;
     4 
     5 int main(){
     6     int T; scanf("%d", &T);
     7     while(T--){
     8         int n;
     9         scanf("%d", &n);
    10         if(n>1) printf("Alice
    ");
    11         else printf("Bob
    ");
    12     }
    13     return 0;
    14 }
    15 /*
    16 题意:有一个容器里装着 n个数,
    17 A和B每次任意说一个数m,
    18 那么他要拿走容器里m的所有因子,
    19 如果谁拿空了容器,那么他输了,
    20 求先手赢还是后手赢
    21 
    22 思路:只有1是后手赢,
    23 因为1只能拿一次,
    24 大于1的情况,
    25 假设a和b都不是聪明的,
    26 假设先手出x,后手出y
    27 结果是后手赢,
    28 那么现在a和b都是聪明的,
    29 先手可以直接出x*y(
    30 即先手可以复制后手的操作,
    31 先手的操作可以包括后手的操作),
    32 则可以赢后手,
    33 所以大于1的情况一定是先手赢
    34 */
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  • 原文地址:https://www.cnblogs.com/z-712/p/7324187.html
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