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  • Game With Sticks

    Problem description

    After winning gold and silver in IOI 2014, Akshat and Malvika want to have some fun. Now they are playing a game on a grid made of n horizontal and m vertical sticks.

    An intersection point is any point on the grid which is formed by the intersection of one horizontal stick and one vertical stick.

    In the grid shown below, n = 3 and m = 3. There are n + m = 6 sticks in total (horizontal sticks are shown in red and vertical sticks are shown in green). There are n·m = 9intersection points, numbered from 1 to 9.

    The rules of the game are very simple. The players move in turns. Akshat won gold, so he makes the first move. During his/her move, a player must choose any remaining intersection point and remove from the grid all sticks which pass through this point. A player will lose the game if he/she cannot make a move (i.e. there are no intersection points remaining on the grid at his/her move).

    Assume that both players play optimally. Who will win the game?

    Input

    The first line of input contains two space-separated integers, n and m (1 ≤ n, m ≤ 100).

    Output

    Print a single line containing "Akshat" or "Malvika" (without the quotes), depending on the winner of the game.

    Examples

    Input

    2 2
    2 3
    3 3

    Output

    Malvika
    Malvika
    Akshat

    Note

    Explanation of the first sample:

    The grid has four intersection points, numbered from 1 to 4.

    If Akshat chooses intersection point 1, then he will remove two sticks (1 - 2 and 1 - 3). The resulting grid will look like this.

    Now there is only one remaining intersection point (i.e. 4). Malvika must choose it and remove both remaining sticks. After her move the grid will be empty.

    In the empty grid, Akshat cannot make any move, hence he will lose.

    Since all 4 intersection points of the grid are equivalent, Akshat will lose no matter which one he picks.

    解题思路:这算是一道简单的博弈题吧。题目的意思就是只要有交叉点,轮到的人就可以移走两根棍子(一横一竖),如果轮到的人当前没有交叉点,那么这个人就输。我们找找规律:

    n(m)  m(n)           赢家

      1   1  2  3  4...Akshat(先手)

      2   2  3  4  5...Malvika(后手)

      3   3  4  5  6...Akshat

      4   4  5  6  7...Malvika

     ...

    按照上面的方式继续推导下去,我们可以发现:如果输入的n、m中最小值是奇数,那么先手Akshat必赢,否则后手Malvika必赢。

    AC代码:

     1 #include <bits/stdc++.h>
     2 using namespace std;
     3 int main(){
     4     int n,m,minval;
     5     cin>>n>>m;
     6     minval=min(n,m);
     7     if(minval%2)cout<<"Akshat"<<endl;
     8     else cout<<"Malvika"<<endl;
     9     return 0;
    10 }
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  • 原文地址:https://www.cnblogs.com/acgoto/p/9156678.html
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