제출 #628262

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
628262		galca	드문 곤충 (IOI22_insects)	C++17	0 / 100	410 ms	288 KiB

insects

#include "insects.h"
#include <vector>

using namespace std;

int min_cardinality(int N) {
	vector<int> vec1;
	vector<int> vec2;
	 
	int min_card = N;
	int dir = 0;

	for (int i = 0; i < N; i++) {
		vec1.push_back(i);
		move_inside(i);
	}

	int max_card;
	while ((vec1.size() + vec2.size()) > 0) {
		max_card = press_button();

		if (max_card == 1)
			return 1;

		vector<int>& src = dir ? vec2 : vec1;
		vector<int>& dst = dir ? vec1 : vec2;

		vector<int> rem;
		for (int i = 0; i < src.size(); i++) {
			move_outside(src[i]);
			int res = press_button();
			if (res != max_card) {
				rem.push_back(src[i]);
			}
			else {
				dst.push_back(src[i]);
			}
			move_inside(src[i]);
		}
		if (dst.size() == 0) {
			return max_card;
		}
		for (int i = 0; i < rem.size(); i++) {
			move_outside(rem[i]);
		}
		rem.erase(rem.begin(), rem.end());
		src.erase(src.begin(), src.end());
		dir ^= 1;
	}

	return max_card;
}

컴파일 시 표준 에러 (stderr) 메시지

insects.cpp: In function 'int min_cardinality(int)':
insects.cpp:29:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   29 |   for (int i = 0; i < src.size(); i++) {
      |                   ~~^~~~~~~~~~~~
insects.cpp:43:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   43 |   for (int i = 0; i < rem.size(); i++) {
      |                   ~~^~~~~~~~~~~~
insects.cpp:10:6: warning: unused variable 'min_card' [-Wunused-variable]
   10 |  int min_card = N;
      |      ^~~~~~~~
insects.cpp:18:6: warning: 'max_card' may be used uninitialized in this function [-Wmaybe-uninitialized]
   18 |  int max_card;
      |      ^~~~~~~~

• Subtask 1: 0 / 10
• Subtask 2: 0 / 15
• Subtask 3: 0 / 75