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Submission #780952

# Submission time Handle Problem Language Result Execution time Memory
780952 2023-07-12T14:56:56 Z devariaota Zagrade (COI20_zagrade) C++17
100 / 100
 846 ms 1148 KB 
#include<bits/stdc++.h>
 
#define sherina ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
#define pb push_back
#define int long long
#define INF 1e18

using namespace std;

int n , q;
stack < int > st;
char ans[200005];

signed main(){
    int buka = 0;
    cin >> n >> q;
    st.push(1);
    for(int i = 0 ; i <= n ; i++) ans[i] = '*';
    for(int i = 2 ; i <= n ; i++){
        if(st.empty()){
            st.push(i);
            continue;
        }
        cout << "? " << st.top() << " " << i << endl;
        int anss; cin >> anss;
        if(anss){
            ans[st.top()] = '(';
            ans[i] = ')';
            buka++;
            st.pop();
        }
        else st.push(i);
    }
    if(st.size() >= 1){ 
        for(int i = 1 ; i <= n ; i++){
            if(buka == n / 2) break;
            if(ans[i] != ')' && ans[i] != '('){
                ans[i] = ')';
                buka++;
            }
        }
        for(int i = n ; i >= 1 ; i--){
            if(ans[i] != ')' && ans[i] != '(') ans[i] = '(';
        }
    }
        cout << "! ";
        for(int i = 1 ; i <= n ; i++) cout << ans[i];
        cout << endl;
}

Subtask #1
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 208 KB Output is correct
2 Correct 4 ms 208 KB Output is correct
3 Correct 8 ms 256 KB Output is correct
4 Correct 7 ms 208 KB Output is correct
5 Correct 3 ms 208 KB Output is correct
6 Correct 5 ms 208 KB Output is correct
7 Correct 9 ms 208 KB Output is correct
8 Correct 4 ms 208 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 208 KB Output is correct
2 Correct 9 ms 228 KB Output is correct
3 Correct 4 ms 308 KB Output is correct
4 Correct 9 ms 208 KB Output is correct
5 Correct 9 ms 304 KB Output is correct
6 Correct 6 ms 208 KB Output is correct
7 Correct 9 ms 308 KB Output is correct
8 Correct 8 ms 208 KB Output is correct

Subtask #3
57.0 / 57.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 208 KB Output is correct
2 Correct 351 ms 336 KB Output is correct
3 Correct 595 ms 396 KB Output is correct
4 Correct 771 ms 336 KB Output is correct
5 Correct 669 ms 336 KB Output is correct
6 Correct 689 ms 336 KB Output is correct
7 Correct 656 ms 868 KB Output is correct
8 Correct 627 ms 380 KB Output is correct

Subtask #4
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 208 KB Output is correct
2 Correct 730 ms 1148 KB Output is correct
3 Correct 846 ms 460 KB Output is correct
4 Correct 546 ms 904 KB Output is correct
5 Correct 717 ms 596 KB Output is correct
6 Correct 602 ms 792 KB Output is correct
7 Correct 596 ms 552 KB Output is correct
8 Correct 765 ms 384 KB Output is correct