poj3364

简单题

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

int n, m, c;

int main()
{
 //freopen("t.txt", "r", stdin);
 while (scanf("%d%d%d", &n, &m, &c), n | m | c)
 {
 if ((n + m) & 1)
 c = 1 - c;
 n = n - 8 + 1;
 m = m - 8 + 1;
 int ans = n * m / 2;
 if (c)
 ans = n * m - ans;
 printf("%d\n", ans);
 }
 return 0;
}