oj.uz

Submission #706437

# Submission time Handle Problem Language Result Execution time Memory
706437 2023-03-06T14:56:57 Z vjudge1 Zagrade (COI20_zagrade) C++14
71 / 100
 976 ms 1172 KB 
#include<bits/stdc++.h>
using namespace std;
#define ll long long
#define FF first
#define SS second
#define all(a) a.begin(), a.end()
#define mod (ll)(1000000007)
bool ask(int l, int r){
    int val;
    cout<<"? "<<l<<' '<<r<<endl;
    cin>>val;
    return val;
}
int main(){
    ios_base::sync_with_stdio(0);cin.tie(0);
    int n, q;
    cin>>n>>q;
    int a=n/2,b=n/2;
    vector<int>Ans(n+1), stk;
    for(int i=1;i<=n;i++){
        if(stk.empty()){
            stk.push_back(i);
        }
        else{
            bool val=ask(stk.back(), i);
            if(val){
                Ans[stk.back()]=1, Ans[i]=2;
                stk.pop_back();
                a--, b--;
            }
            else{
                stk.push_back(i);
            }
        }
    }
    cout<<"! ";
    for(int i=1;i<=n;i++){
        char c;
        if(Ans[i]){
            c='('+Ans[i]-1;
        }
        else{
            if(a)
                c='(', a--;
            else
                c=')';
        }
        cout<<c;
    }
}

Subtask #1
14.0 / 14.0

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

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
57.0 / 57.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 208 KB Output is correct
2 Correct 320 ms 696 KB Output is correct
3 Correct 976 ms 696 KB Output is correct
4 Correct 783 ms 720 KB Output is correct
5 Correct 597 ms 696 KB Output is correct
6 Correct 682 ms 700 KB Output is correct
7 Correct 540 ms 1172 KB Output is correct
8 Correct 636 ms 700 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 -