oj.uz

Submission #917591

# Submission time Handle Problem Language Result Execution time Memory
917591 2024-01-28T12:57:32 Z PotatoMan Zagrade (COI20_zagrade) C++14
71 / 100
 502 ms 1708 KB 
#include <bits/stdc++.h>
#define inf INT_MAX
#define longlonginf LONG_LONG_MAX
#define mod 998244353
#define MAXN 200005
#define pii pair<ll,ll>
#define ll long long
#define deb(x) cerr<<"[ "<<#x<<" = "<<x<<" ]";
#define yes() cout<<"YES\n";
#define no() cout<<"NO\n";
using namespace std;
 
ll n,k,m,q,cur,z;
ll ans = 0;
string subtask;

void solve(){
	cin>>n>>q;
	ll rem = n/2;
	stack<int> s;
	string res = string(n,'.');
	for(int i = 1 ; i <= n ; i++){
		if( s.empty() ) {
			s.push(i);
			continue;
		}
		cout<<"? "<<s.top()<<" "<<i<<endl;
		cin>>k;
		if(k){
			res[s.top()-1] = '(';
			res[i-1] = ')';
			s.pop();
			rem--;
		}
		else{
			s.push(i);
		}
	}
	for(int i = 0 ; i < rem/2 ; i++) {
		res[s.top()] =  ')';
		s.pop();
	}
	for(int i = 0 ; i < rem/2 ; i++) {
		res[s.top()] =  '(';
		s.pop();
	}
	cout<<"! "<<res<<endl;
}

int main(){
	ios_base::sync_with_stdio(false);
	cin.tie(0);
	cout.tie(0);
	int T = 1;
	//cin>>T;
	for(int i = 0 ; i < T ; i++){
		//cout<<"Case #"<<i+1<<": ";
		solve();
	}
	return 0;
}
 
/*
	out of bound for loop
	(constraint change in loop)
	forget to change bool to int
	misread -> missed subtask
	you thought u declared it huh?
	not i but x
	logical operator
	wrong example/proof
	thoroughly
	wrong variables
	thinking it wrong
	bruh just try some test case
	capitals ;-;
	wrong data structure lol
	count memory usement
	corner case
	oversized array
	orders
	statements
	size initializer
	while con
	map -> array
	wrong digits??
	swapped variables??
	check if theres any variabled
	that got declared twice
	find some pattern
	name collision
	constraints??!
	mod !!
	resets
*/

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 3 ms 344 KB Output is correct
4 Correct 3 ms 344 KB Output is correct
5 Correct 4 ms 500 KB Output is correct
6 Correct 7 ms 340 KB Output is correct
7 Correct 3 ms 344 KB Output is correct
8 Correct 3 ms 344 KB Output is correct

Subtask #2
0 / 7.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 344 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 0 ms 344 KB Output is correct
2 Correct 226 ms 528 KB Output is correct
3 Correct 502 ms 528 KB Output is correct
4 Correct 437 ms 528 KB Output is correct
5 Correct 476 ms 780 KB Output is correct
6 Correct 462 ms 528 KB Output is correct
7 Correct 464 ms 1708 KB Output is correct
8 Correct 492 ms 528 KB Output is correct

Subtask #4
0 / 22.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 344 KB Mismatch at position 1. Expected ), found .
2 Halted 0 ms 0 KB -