#include <bits/stdc++.h> using namespace std; int a[40004]; int main() {int i,j,v,x; srand ( time(NULL) ); for(i=0;i<=39601;i++) a[i]=i; std::random_shuffle ( a, a+39601 ); for(i=0;i<=39601;i++) { cout<<a[i]/199<<" "<<a[i]%199<<'\n'; cout.flush(); cin>>x; if(x==0) return 0; } return 0; }