oj.uz

Submission #640223

# Submission time Handle Problem Language Result Execution time Memory
640223 2022-09-14T03:19:43 Z kebine Zagrade (COI20_zagrade) C++17
71 / 100
 917 ms 1012 KB 
#include <bits/stdc++.h>

using namespace std;

int ask(int a, int b){
    int ans;
    cout << "? " << a << " " << b << endl;
    cin >> ans;

    return ans;
}

int main(){
    ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
    int n, t; cin >> n >> t;
    stack<int>st;
    string ans = "(";
    st.push(1);

    for(int i = 2; i <= n; i++){    
        int a = ask(st.top(), i);
        if(a){
            st.pop();
            ans.push_back(')');

            if(st.empty() && i != n){
                ans.push_back('(');
                st.push(i + 1);
                i++;
            }
        } else{
            st.push(i);
            ans.push_back('(');
        }
    }

    cout << "! " << ans << endl;

    return 0;
}

Subtask #1
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 208 KB Output is correct
2 Correct 8 ms 312 KB Output is correct
3 Correct 13 ms 208 KB Output is correct
4 Correct 9 ms 208 KB Output is correct
5 Correct 7 ms 208 KB Output is correct
6 Correct 7 ms 208 KB Output is correct
7 Correct 7 ms 208 KB Output is correct
8 Correct 8 ms 208 KB Output is correct

Subtask #2
0 / 7.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 208 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 0 ms 208 KB Output is correct
2 Correct 377 ms 732 KB Output is correct
3 Correct 741 ms 616 KB Output is correct
4 Correct 917 ms 680 KB Output is correct
5 Correct 719 ms 672 KB Output is correct
6 Correct 806 ms 632 KB Output is correct
7 Correct 880 ms 1012 KB Output is correct
8 Correct 727 ms 748 KB Output is correct

Subtask #4
0 / 22.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 208 KB Mismatch at position 1. Expected ), found (
2 Halted 0 ms 0 KB -