Submission #442585

#	Time	Username	Problem	Language	Result	Execution time	Memory
442585		BornaCizmarevic	Zagrade (COI20_zagrade)	C++14	71 / 100	1816 ms	1864 KiB

zagrade

#include <bits/stdc++.h>

using namespace std;

int main (){
	
	ios::sync_with_stdio(0);
	cin.tie(0);
	
	int n,q;
	cin>>n;
	cin>>q;
	string s="";
	s=s+'(';
	int p=1;
	vector <int> v;
	v.push_back(1);
	for (int i=1;i<n;i++){
		p=v[v.size()-1];
		cout<<"? "<<p<<" "<<i+1<<endl;
		bool ans;
		cin>>ans;
		if (ans==0){
			s=s+'(';
			v.push_back(i+1);
		}
		if (ans==1){
			s=s+')';
			v.pop_back();
			if (v.size()==0 and i<n-1){
				s=s+'(';
				v.push_back(i+2);
				i++;
			}
		}
	}
	cout<<"! "<<s;
	return 0;
}

• Subtask 1: 14 / 14
• Subtask 2: 0 / 7
• Subtask 3: 57 / 57
• Subtask 4: 0 / 22