#include<bits/stdc++.h> using namespace std; int main(){ cout<<"1 0"<<endl; cout<<"1 1"<<endl; cout<<"2 0"<<endl; cout<<"1 2"<<endl; cout<<"2 1"<<endl; cout<<"2 1"<<endl; cout<<"3 0"<<endl; cout<<"1 3"<<endl; cout<<"2 2"<<endl; cout<<"2 2"<<endl; cout<<"3 1"<<endl; cout<<"2 2"<<endl; cout<<"3 1"<<endl; cout<<"3 1"<<endl; cout<<"4 0"<<endl; cout<<"1 4"<<endl; cout<<"2 3"<<endl; cout<<"2 3"<<endl; cout<<"3 2"<<endl; cout<<"2 3"<<endl; cout<<"3 2"<<endl; cout<<"3 2"<<endl; cout<<"4 1"<<endl; cout<<"2 3"<<endl; cout<<"3 2"<<endl; cout<<"3 2"<<endl; cout<<"4 1"<<endl; cout<<"3 2"<<endl; cout<<"4 1"<<endl; cout<<"4 1"<<endl; cout<<"5 0"<<endl; cout<<"1 5"<<endl; cout<<"2 4"<<endl; cout<<"2 4"<<endl; cout<<"3 3"<<endl; cout<<"2 4"<<endl; cout<<"3 3"<<endl; cout<<"3 3"<<endl; cout<<"4 2"<<endl; cout<<"2 4"<<endl; cout<<"3 3"<<endl; cout<<"3 3"<<endl; cout<<"4 2"<<endl; cout<<"3 3"<<endl; cout<<"4 2"<<endl; cout<<"4 2"<<endl; cout<<"5 1"<<endl; cout<<"2 4"<<endl; cout<<"3 3"<<endl; cout<<"3 3"; return 0; }