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Submission #640222

# Submission time Handle Problem Language Result Execution time Memory
640222 2022-09-14T03:10:00 Z andecaandeci Zagrade (COI20_zagrade) C++17
0 / 100
 1 ms 496 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(')');
        } else{
            st.push(i);
            ans.push_back('(');
        }
    }

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

    return 0;
}

Subtask #1
0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 208 KB Output is correct
2 Runtime error 1 ms 496 KB Execution killed with signal 11
3 Halted 0 ms 0 KB -

Subtask #2
0 / 7.0

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

Subtask #3
0 / 57.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 208 KB Output is correct
2 Runtime error 1 ms 448 KB Execution killed with signal 11
3 Halted 0 ms 0 KB -

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 -