题解

#include <bits/stdc++.h>
using namespace std;
int n,m,x,y;
int a[1001][1001];
int dx[]={0,1,0,-1};
int dy[]={1,0,-1,0};
int main()
{
cin>>n>>m>>x>>y;
for(int i=0;i<4;i++)
{
int nx=dx[i]+x;
int ny=dy[i]+y;
if(nx<=0 or ny<=0 or nx>n or ny>m)
{
cout<<"NA"<<endl;

	}
	else
	{
		cout<<nx<<" "<<ny<<endl; 
	}
}

return 0;

}