Submission #1003920

#	Time	Username	Problem	Language	Result	Execution time	Memory
1003920		vjudge1	Zagrade (COI20_zagrade)	C++17	71 / 100	588 ms	1776 KiB

zagrade

#include <bits/stdc++.h>

using namespace std;

int marc[100005];
stack<int> st;

int main(){
	int n,q; cin>>n>>q;
	for(int i = 1; i <= n; i++){
		if(st.size() == 0){
			marc[i] = 1;
			st.push(i);
			continue;
		}
		cout<<"? "<<st.top()<<" "<<i<<endl;
		int x; cin>>x;
		if(x == 0){
			marc[i] = 1;
			st.push(i);
		}else{
			marc[i] = 0;
			st.pop();
		}
	}
	cout<<"! ";
	for(int i = 1; i <= n; i++){
		if(marc[i] == 0)cout<<")";
		else cout<<"(";
	}cout<<endl;
	return 0;
}

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