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Submission #986452

# Submission time Handle Problem Language Result Execution time Memory
986452 2024-05-20T15:07:37 Z alexdd Zagrade (COI20_zagrade) C++17
100 / 100
 537 ms 2028 KB 
#include<bits/stdc++.h>
using namespace std;
int n,q;
int query(int le, int ri)
{
    if((ri-le+1)%2==1)
        return 0;
    cout<<"? "<<le<<" "<<ri<<endl;
    int aux;
    cin>>aux;
    return aux;
}
char rez[100005];
signed main()
{
    cin>>n>>q;
    int cnt=n/2;
    deque<int> dq;
    for(int i=1;i<=n;i++)
    {
        dq.push_back(i);
        if((int)dq.size()>=2 && query(dq[(int)dq.size()-2],dq.back()))
        {
            rez[dq[(int)dq.size()-2]] = '(';
            rez[dq[(int)dq.size()-1]] = ')';
            dq.pop_back();
            dq.pop_back();
            cnt--;
        }
    }
    for(int i=0;i<cnt;i++)
    {
        rez[dq[i]]=')';
        rez[dq[(int)dq.size()-i-1]]='(';
    }
    cout<<"! ";
    for(int i=1;i<=n;i++)
        cout<<rez[i];
    cout<<endl;
    return 0;
}

Subtask #1
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 2 ms 344 KB Output is correct
3 Correct 4 ms 344 KB Output is correct
4 Correct 4 ms 344 KB Output is correct
5 Correct 4 ms 344 KB Output is correct
6 Correct 4 ms 344 KB Output is correct
7 Correct 4 ms 344 KB Output is correct
8 Correct 4 ms 344 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 4 ms 600 KB Output is correct
3 Correct 4 ms 344 KB Output is correct
4 Correct 5 ms 600 KB Output is correct
5 Correct 5 ms 344 KB Output is correct
6 Correct 4 ms 440 KB Output is correct
7 Correct 6 ms 344 KB Output is correct
8 Correct 4 ms 344 KB Output is correct

Subtask #3
57.0 / 57.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 257 ms 952 KB Output is correct
3 Correct 530 ms 1220 KB Output is correct
4 Correct 506 ms 1248 KB Output is correct
5 Correct 486 ms 964 KB Output is correct
6 Correct 529 ms 1272 KB Output is correct
7 Correct 494 ms 1472 KB Output is correct
8 Correct 537 ms 1012 KB Output is correct

Subtask #4
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 510 ms 2028 KB Output is correct
3 Correct 535 ms 1288 KB Output is correct
4 Correct 524 ms 1520 KB Output is correct
5 Correct 534 ms 1328 KB Output is correct
6 Correct 498 ms 1876 KB Output is correct
7 Correct 514 ms 1708 KB Output is correct
8 Correct 490 ms 1008 KB Output is correct