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Submission #442556

# Submission time Handle Problem Language Result Execution time Memory
442556 2021-07-08T08:01:05 Z fskarica Zagrade (COI20_zagrade) C++14
71 / 100
 1076 ms 960 KB 
#include <bits/stdc++.h>

using namespace std;

#define ll long long
#define fi first
#define se second

const int MAX = 1e5 + 10;
int n, q;
int x;
vector <int> v;
int arr[MAX];

int main() {
    cin >> n >> q;

    v.push_back(1);

    for (int i = 2; i <= n; i++) {
        if (v.size() == 0) {
            v.push_back(i);
            continue;
        }

        cout << "? " << v.back() << " " << i << endl;
        cin >> x;

        if  (x == 0) {
            v.push_back(i);
        }
        else {
            arr[i] = 2;
            arr[v.back()] = 1;
            v.pop_back();
        }
    }

    cout << "! ";
    for (int i = 1; i <= n; i++) {
        if (arr[i] == 1) {
            cout << "(";
        }
        else {
            cout << ")";
        }
    }
    cout << endl;

    return 0;
}

Subtask #1
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 200 KB Output is correct
2 Correct 4 ms 200 KB Output is correct
3 Correct 12 ms 300 KB Output is correct
4 Correct 13 ms 360 KB Output is correct
5 Correct 12 ms 300 KB Output is correct
6 Correct 10 ms 200 KB Output is correct
7 Correct 13 ms 304 KB Output is correct
8 Correct 9 ms 200 KB Output is correct

Subtask #2
0 / 7.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 200 KB Mismatch at position 2. Expected (, found )
2 Halted 0 ms 0 KB -

Subtask #3
57.0 / 57.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 200 KB Output is correct
2 Correct 280 ms 664 KB Output is correct
3 Correct 921 ms 844 KB Output is correct
4 Correct 1076 ms 960 KB Output is correct
5 Correct 996 ms 888 KB Output is correct
6 Correct 806 ms 824 KB Output is correct
7 Correct 1014 ms 956 KB Output is correct
8 Correct 1052 ms 648 KB Output is correct

Subtask #4
0 / 22.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 200 KB Mismatch at position 3. Expected (, found )
2 Halted 0 ms 0 KB -