Submission #628222

#	Time	Username	Problem	Language	Result	Execution time	Memory
628222		galca	Rarest Insects (IOI22_insects)	C++17	0 / 100	358 ms	208 KiB

insects

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

using namespace std;

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

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

	while ((vec1.size() + vec2.size()) > 0) {
		vector<int>& src = dir ? vec2 : vec1;
		vector<int>& dst = dir ? vec1 : vec2;

		move_inside(src[0]);
		int size = 1;
		for (int i = 1; i < src.size(); i++) {
			move_inside(src[i]);
			int res = press_button();
			if (res != 2) {
				dst.push_back(i);
			}
			else {
				++size;
			}
			move_outside(src[i]);
		}
		move_outside(src[0]);

		if (size < min_card) {
			min_card = size;
		}
		src.erase(src.begin(), src.end());
		dir ^= 1;
	}

	return min_card;
}

Compilation message (stderr)

insects.cpp: In function 'int min_cardinality(int)':
insects.cpp:24:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   24 |   for (int i = 1; i < src.size(); i++) {
      |                   ~~^~~~~~~~~~~~
insects.cpp:10:6: warning: unused variable 'remaining' [-Wunused-variable]
   10 |  int remaining = N;
      |      ^~~~~~~~~

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