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Submission #480823

# Submission time Handle Problem Language Result Execution time Memory
480823 2021-10-18T09:33:14 Z Rainbowbunny Zagrade (COI20_zagrade) C++17
100 / 100
 1125 ms 984 KB 
#include <bits/stdc++.h>
using namespace std;

const int MAXN = 100005;

int n, q;
char c[MAXN];

int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    cout.tie(0);
    cin >> n >> q;
    stack <int> s;
    for(int i = n; i >= 1; i--)
    {
        if(s.empty())
        {
            s.push(i);
        }
        else
        {
            cout << "? " << i << ' ' << s.top() << endl;
            int id;
            cin >> id;
            if(id == 1)
            {
                c[i] = '(';
                c[s.top()] = ')';
                s.pop();
            }
            else
            {
                s.push(i);
            }
        }
    }
    int tmp = s.size() / 2;
    for(int i = 1; i <= tmp; i++)
    {
        c[s.top()] = ')';
        s.pop();
    }
    for(int i = 1; i <= tmp; i++)
    {
        c[s.top()] = '(';
        s.pop();
    }
    cout << "! ";
    for(int i = 1; i <= n; i++)
    {
        cout << c[i];
    } 
    cout << endl;
}

Subtask #1
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 200 KB Output is correct
2 Correct 6 ms 200 KB Output is correct
3 Correct 11 ms 200 KB Output is correct
4 Correct 11 ms 200 KB Output is correct
5 Correct 13 ms 200 KB Output is correct
6 Correct 9 ms 200 KB Output is correct
7 Correct 12 ms 200 KB Output is correct
8 Correct 11 ms 200 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 200 KB Output is correct
2 Correct 12 ms 200 KB Output is correct
3 Correct 10 ms 200 KB Output is correct
4 Correct 10 ms 320 KB Output is correct
5 Correct 12 ms 200 KB Output is correct
6 Correct 13 ms 320 KB Output is correct
7 Correct 10 ms 200 KB Output is correct
8 Correct 12 ms 200 KB Output is correct

Subtask #3
57.0 / 57.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 200 KB Output is correct
2 Correct 449 ms 516 KB Output is correct
3 Correct 794 ms 592 KB Output is correct
4 Correct 965 ms 456 KB Output is correct
5 Correct 744 ms 424 KB Output is correct
6 Correct 876 ms 492 KB Output is correct
7 Correct 743 ms 732 KB Output is correct
8 Correct 836 ms 600 KB Output is correct

Subtask #4
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 200 KB Output is correct
2 Correct 945 ms 984 KB Output is correct
3 Correct 898 ms 488 KB Output is correct
4 Correct 769 ms 624 KB Output is correct
5 Correct 934 ms 472 KB Output is correct
6 Correct 1091 ms 700 KB Output is correct
7 Correct 1125 ms 520 KB Output is correct
8 Correct 946 ms 476 KB Output is correct