제출 #1152366

#제출 시각아이디문제언어결과실행 시간메모리
1152366gelastropodZagrade (COI20_zagrade)C++20
71 / 100
230 ms844 KiB
#include <bits/stdc++.h> using namespace std; #define int long long signed main() { int N, Q, x; cin >> N >> Q; stack<int> stk; stk.push(-1); stk.push(0); vector<bool> close(N, false); for (int i = 1; i < N; i++) { if (stk.top() == -1) { stk.push(i); continue; } cout << "? " << stk.top() + 1 << ' ' << i + 1 << endl; cin >> x; if (x) { close[i] = true; stk.pop(); } else stk.push(i); } cout << "! "; for (auto i : close) cout << (i ? ')' : '('); cout << endl; }
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