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Submission #320890

# Submission time Handle Problem Language Result Execution time Memory
320890 2020-11-10T07:11:29 Z dolphingarlic Zagrade (COI20_zagrade) C++14
71 / 100
 966 ms 1036 KB 
#include <bits/stdc++.h>
using namespace std;

bool guess(int a, int b) {
    cout << "? " << a << ' ' << b << endl;
    bool res;
    cin >> res;
    return res;
}

int main() {
    int n, q;
    cin >> n >> q;
    stack<int> stck;
    string ans = "! ";
    for (int i = 1; i <= n; i++) {
        if (!stck.size()) {
            ans += "(";
            stck.push(i);
        } else {
            if (guess(stck.top(), i)) {
                stck.pop();
                ans += ")";
            } else {
                stck.push(i);
                ans += "(";
            }
        }
    }
    cout << ans << endl;
    return 0;
}

Subtask #1
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 5 ms 364 KB Output is correct
3 Correct 8 ms 364 KB Output is correct
4 Correct 8 ms 364 KB Output is correct
5 Correct 7 ms 364 KB Output is correct
6 Correct 10 ms 364 KB Output is correct
7 Correct 9 ms 364 KB Output is correct
8 Correct 7 ms 364 KB Output is correct

Subtask #2
0 / 7.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 364 KB Mismatch at position 1. Expected ), found (
2 Halted 0 ms 0 KB -

Subtask #3
57.0 / 57.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 501 ms 744 KB Output is correct
3 Correct 948 ms 692 KB Output is correct
4 Correct 926 ms 908 KB Output is correct
5 Correct 966 ms 680 KB Output is correct
6 Correct 884 ms 944 KB Output is correct
7 Correct 900 ms 1036 KB Output is correct
8 Correct 897 ms 756 KB Output is correct

Subtask #4
0 / 22.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 364 KB Mismatch at position 1. Expected ), found (
2 Halted 0 ms 0 KB -