#include<bits/stdc++.h> using namespace std; int main() { int n,a,b; cin>>n>>a>>b; for(int i=1;i<=n;i++) { cout<<"("<<a<<","<<i<<") "; } cout<<endl; for(int i=1;i<=n;i++) { cout<<"("<<i<<","<<b<<") "; } cout<<endl; for(int i=1;i<=n;i++) { for(int j=1;j<=n;j++) { if(i-ja-b) { cout<<"("<<i<<","<<j<<") "; } } } cout<<endl; for(int i=n;i>=1;i--) { for(int j=1;j<=n;j++) { if(i+ja+b) { cout<<"("<<i<<","<<j<<") "; } } }

return 0;

}$$