题解

会个判断就行，要什么深搜......

#include<iostream>
using namespace std;
long long n,m,a[1005][1005],x,y;
int main(){
    cin>>n>>m>>x>>y;
    if(!(x<1||x>n||y+1<1||y+1>m)){
        cout<<x<<" "<<y+1<<endl;
    }
    else{
        cout<<"NA"<<endl;
    }
    if(!(x+1<1||x+1>n||y<1||y>m)){
        cout<<x+1<<" "<<y<<endl;
    }
    else{
        cout<<"NA"<<endl;
    }
    if(!(x<1||x>n||y-1<1||y-1>m)){
        cout<<x<<" "<<y-1<<endl;
    }
    else{
        cout<<"NA"<<endl;
    }
    if(!(x-1<1||x-1>n||y<1||y>m)){
        cout<<x-1<<" "<<y<<endl;
    }
    else{
        cout<<"NA"<<endl;
    }
}