极致压行--包AC

代码简单易懂，无需数组，测试点全AC
你不配当深搜，我要取关你！

#include<iostream>
using namespace std;
int main(){//
    int n,m,x,y;
    cin>>n>>m>>x>>y;
    if(y+1>m)cout<<"NA"<<endl;else cout<<x<<" "<<y+1<<endl;//右边
    if(x+1>n)cout<<"NA"<<endl;else cout<<x+1<<" "<<y<<endl;//下边
    if(y-1<1)cout<<"NA"<<endl; else cout<<x<<" "<<y-1<<endl;//左边
    if(x-1<1)cout<<"NA"<<endl;else cout<<x-1<<" "<<y<<endl;//上边
    return 0;
}