#include<iostream> using namespace std; int main(){ int n,x,y; cin>>n>>x>>y; for (int i=1;i<=n;i++) cout<<'('<<x<<','<<i<<')'; cout<<endl; for (int i=1;i<=n;i++) cout<<'('<<i<<','<<y<<')'; cout<<endl; for (int i=1;i<=n;i++) for (int j=1;j<=n;j++) if(j-i == y-x) cout<<'('<<i<<','<<j<<')'; cout<<endl; for (int i=1;i<=n;i++) for (int j=1;j<=n;j++) if(j+i == y+x) cout<<'('<<j<<','<<i<<')'; cout<<endl; }