#include using namespace std; pair f(int r, int c) { cout << r << ' ' << c << endl; int x, y; cin >> x >> y; if (!x) exit(0); return {x, y}; } int main() { cin.tie(0)->sync_with_stdio(0); auto [xx, yy] = f(1, 1); int off = xx < 10 && yy < 10; if (auto [x, y] = f(7 + off, 7 + off); x==7) f(f(6 + off, 7 + off).first == 5 + off ? 8 + off : 5 + off, 7 + off); else f(7 + off, f(7 + off, 6 + off).second == 5 + off ? 8 + off : 5 + off); }