#include #include using namespace std; pair f(int r, int c) { cout << r << ' ' << c << endl; int x, y; cin >> x >> y; assert(!x == !y); if (!x) exit(0); assert(1 <= x && x <= 59 && 1 <= y && y <= 42); return {x, y}; } int main() { cin.tie(0)->sync_with_stdio(0); if (auto [x, y] = f(7, 7); x==7) f(f(6, 7).first == 5 ? 8 : 5, 7); else f(7, f(7, 6).second == 5 ? 8 : 5); assert(0); }