Chef and Walking on the rectangle

Refer http://www.codechef.com/problems/CHRECT/

 

Solution:

/*Chef and Walking on the rectangle*/

#include<stdio.h>

int main()
{
    int K,M,N,T;
    scanf("%d",&T);
    while(T--)
    {
        scanf("%d %d %d",&N,&M,&K);
        if(((N==1) && (M<=2)) || ((N<=2) && (M==1)))
            printf("0\n");
        else if((N==1) || (M==1))
            printf("%d\n",K);
        else
            printf("%d\n",(K/2)+(K&1));
    }
    return 0;
}