제출 #514810

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
514810		rajatshenoi	Colors (BOI20_colors)	C++14	0 / 100	0 ms	212 KiB

Colors

#include <bits/stdc++.h>

using namespace std;

int main(int argc, char const *argv[])
{
	int N;
	cin >> N;

	vector<int> pos(N);

	iota(pos.begin(), pos.end(), 1);

	cout << "? " << pos.size() << endl;

	int prev = pos.size();

	int answer;
	cin >> answer;

	while(pos.size() > 1)
	{
		int current = pos[(pos.size() / 2)];
		cout << "? " << current << endl;
		cin >> answer;

		if (answer == 1)
		{
			pos.resize(abs(prev - current));
		}
		else
		{
			pos.erase(pos.begin(), pos.begin() + (pos.size() / 2));
		}

		prev = current;

		for (auto el : pos) cout << el << " ";
		cout << endl;
	}

	cout << "= " << pos[0] << endl;

	return 0;
}

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