#include<bits/stdc++.h> using namespace std; int main() {cout<<"(0,0)"<<endl; cout<<"(1,0)"<<endl; cout<<"(2,0)"<<endl; cout<<"(2,1)"<<endl; cout<<"(2,2)"<<endl; cout<<"(2,3)"<<endl; cout<<"(2,4)"<<endl; cout<<"(3,4)"<<endl; cout<<"(4,4)"<<endl; return 0; }