oj.uz

Submission #557798

# Submission time Handle Problem Language Result Execution time Memory
557798 2022-05-06T04:15:49 Z Yazan_Alattar Zagrade (COI20_zagrade) C++14
14 / 100
 1427 ms 324 KB 
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef unsigned long long ull;
#define F first
#define S second
#define pb push_back
#define endl "\n"
#define all(x) x.begin(), x.end()
const int M = 500007;
const ll inf = 2e9;
const ll mod = 1e9 + 7;
const double pi = acos(-1);
const double eps = 1e-6;
const int dx[] = {0, -1, 0, 1}, dy[] = {1, 0, -1, 0};
const int block = 320;

char ans[M];
int n, q;

int ask(int l, int r){
    cout << "? " << l << " " << r << endl;
    cout.flush();

    int ret; cin >> ret;
    return ret;
}

void solve(int l, int r){
    if(l > r) return;

    for(int i = l + 1; i <= r; i += 2){
        if(ask(l, i)){
            ans[l] = '(';
            ans[i] = ')';
            solve(l + 1, i - 1);
            solve(i + 1, r);
            return;
        }
    }
    solve(l + 1, r);
    return;
}

int main(){
//        ios::sync_with_stdio(0); cin.tie(0); cout.tie(0);
    cin >> n >> q;
    solve(1, n);

    int rem = n / 2;
    for(int i = 1; i <= n; ++i) if(ans[i] == ')') --rem;

    cout << "! ";
    for(int i = 1; i <= n; ++i){
        if(ans[i]) cout << ans[i];
        else if(rem) cout << ')', --rem;
        else cout << '(';
    }
    cout << endl;
    return 0;
}

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 19 ms 208 KB Output is correct
4 Correct 35 ms 208 KB Output is correct
5 Correct 61 ms 208 KB Output is correct
6 Correct 98 ms 208 KB Output is correct
7 Correct 604 ms 300 KB Output is correct
8 Correct 46 ms 208 KB Output is correct

Subtask #2
0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 208 KB Output is correct
2 Runtime error 1427 ms 292 KB Execution killed with signal 13
3 Halted 0 ms 0 KB -

Subtask #3
0 / 57.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 208 KB Output is correct
2 Correct 274 ms 324 KB Output is correct
3 Runtime error 417 ms 296 KB Execution killed with signal 13
4 Halted 0 ms 0 KB -

Subtask #4
0 / 22.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 208 KB Incorrect
2 Halted 0 ms 0 KB -