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Submission #1112164

# Submission time Handle Problem Language Result Execution time Memory
1112164 2024-11-13T17:34:07 Z vako_p Zagrade (COI20_zagrade) C++14
100 / 100
 1900 ms 3716 KB 
#include <bits/stdc++.h>
using namespace std;
#define ll int
#define pb push_back

const int mxN = 1e6 + 5;
ll n,a[mxN],q;
stack<ll> st;
char ch[] = {'(', ')'};

int main(){
    ios::sync_with_stdio(false);
	cin.tie(0);
	cout.tie(0);
	cin >> n >> q;
	st.push(1);
	ll cnt = n / 2;
	for(int i = 2; i <= n; i++){
		ll l = st.top();
		cout << "? " << l << ' ' << i << endl;
		ll ans;
		cin >> ans;
		if(ans){
			a[l] = 1;
			a[i] = 2;
			st.pop();
			cnt--;
		}
		else st.push(i);
		if(st.empty()) st.push(++i);
	}
	cout << "! ";
	ll val = 2;
	for(int i = 1; i <= n; i++){
		if(a[i] == 0){
			cnt--;
			a[i] = val;
			if(cnt == 0) val = 1;
		}
		cout << ch[a[i] - 1];
	}
	cout << endl;
}

Subtask #1
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 9 ms 336 KB Output is correct
3 Correct 16 ms 464 KB Output is correct
4 Correct 15 ms 608 KB Output is correct
5 Correct 15 ms 336 KB Output is correct
6 Correct 18 ms 600 KB Output is correct
7 Correct 14 ms 336 KB Output is correct
8 Correct 11 ms 336 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 16 ms 584 KB Output is correct
3 Correct 16 ms 504 KB Output is correct
4 Correct 15 ms 468 KB Output is correct
5 Correct 14 ms 336 KB Output is correct
6 Correct 14 ms 464 KB Output is correct
7 Correct 15 ms 336 KB Output is correct
8 Correct 11 ms 592 KB Output is correct

Subtask #3
57.0 / 57.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 889 ms 3088 KB Output is correct
3 Correct 1814 ms 2684 KB Output is correct
4 Correct 1755 ms 2688 KB Output is correct
5 Correct 1712 ms 3160 KB Output is correct
6 Correct 1752 ms 2936 KB Output is correct
7 Correct 1810 ms 3380 KB Output is correct
8 Correct 1746 ms 2908 KB Output is correct

Subtask #4
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 1823 ms 1404 KB Output is correct
3 Correct 1774 ms 3716 KB Output is correct
4 Correct 1861 ms 3132 KB Output is correct
5 Correct 1802 ms 3708 KB Output is correct
6 Correct 1900 ms 3392 KB Output is correct
7 Correct 1869 ms 3064 KB Output is correct
8 Correct 1780 ms 2688 KB Output is correct