제출 #1085639

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1085639		vjudge1	Carnival (CEOI14_carnival)	C++17	100 / 100	6 ms	424 KiB

carnival

#include <iostream>
#include <vector>
using namespace std;

int ofcolor[151], color[151], k = 1;

bool ask(int l, int r, int i) {
	cout << r - l + 2;
	for (int i = l; i <= r; i++) cout << ' ' << ofcolor[i];
	cout << ' ' << i << endl;
	int n;
	cin >> n;
	return n == r - l + 1;
}

signed main() {
	int n;
	cin >> n;
	color[1] = ofcolor[1] = 1;
	for (int i = 2; i <= n; i++) {
		if (!ask(1, k, i)) {
			ofcolor[color[i] = ++k] = i;
			continue;
		}
		int l = 1, r = k;
		while (l < r) {
			int m = l + r >> 1;
			if (ask(l, m, i)) r = m;
			else l = m + 1;
		}
		color[i] = l;
	}
	cout << 0;
	for (int i = 1; i <= n; i++) cout << ' ' << color[i];
	return 0;
}

컴파일 시 표준 에러 (stderr) 메시지

carnival.cpp: In function 'int main()':
carnival.cpp:27:14: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   27 |    int m = l + r >> 1;
      |            ~~^~~

• Subtask 1: 20 / 20
• Subtask 2: 20 / 20
• Subtask 3: 20 / 20
• Subtask 4: 20 / 20
• Subtask 5: 20 / 20