关于#c++#的问题，请各位专家解答！

Question

https://xjoi.net/problem/1176

#include <cstdio>
#include <cstdlib>
#include <iostream> 
using namespace std;

int main()
{
    int n,m,r;
    scanf("%d %d %d",&n,&m,&r);
    r *= 2;
    int nums = (n / r) * (m / r);
    char* s;
    if(nums % 2 == 1)     s = "Alice win";
    else    s = "Bob win";
    printf(s);
    return 0; 
}

这里有哪里错了？

Answer 1