题目链接：http://ybt.ssoier.cn:8088/problem_show.php?pid=1330

代码：

#include<bits/stdc++.h> 
using namespace std;
int main(){
    for(int i=0;i<2;i++){
        int x,y;
        scanf("%d%d",&x,&y);    
        if(max(x,y)<=2){
            if(x==2&&y==2) printf("%d\n",3);
            else printf("%d\n",2);
            continue;
        }else if(max(x,y)==3){
            printf("%d\n",1);
            continue;
        }
        printf("%d\n",int(max(x-1,y-1)/2.0+0.5));
    }
}