poj 2605 Simple game on a grid

poj 2605 Simple game on a grid

#include<stdio.h>#include<iostream>using namespace std;main(){    int M,N;    while(scanf("%d%d",&M,&N)!=EOF)    {        if (M==1||N==1) cout<<(M+N)/2<<endl;          else cout<<((M*N)%3?1:2)<<endl;    }          return 0;}