Submission #491650

#	Time	Username	Problem	Language	Result	Execution time	Memory
491650		valerikk	Squirrel (RMI18_squirrel)	C++17	25 / 100	4801 ms	41664 KiB

squirrel

#include <iostream>
#include <vector>
#include <algorithm>
#include <numeric>

const int MAX_FRACTAL_SIZE = 1024;

std::vector<std::pair<int, int>> jumps[MAX_FRACTAL_SIZE + 1];

int main() {
	std::ios::sync_with_stdio(false);
	std::cin.tie(0);
	jumps[1] = {{1, 0}};
	for (int fractal_size = 2; fractal_size <= MAX_FRACTAL_SIZE; fractal_size *= 2) {
		for (int i = 1; i <= fractal_size; ++i) {
			jumps[fractal_size].emplace_back(i, 0);
		}
		for (int i = 1; i <= fractal_size / 2; ++i) {
			jumps[fractal_size].emplace_back(fractal_size + i, i);
		}
		for (int i = 1; i <= fractal_size / 2; ++i) {
			jumps[fractal_size].emplace_back(fractal_size + i, -i);
		}
		for (const auto &[x, y] : jumps[fractal_size / 2]) {
			jumps[fractal_size].emplace_back(fractal_size + fractal_size / 2 + x, fractal_size / 2 + y);
			jumps[fractal_size].emplace_back(fractal_size + fractal_size / 2 + x, -fractal_size / 2 + y);
			jumps[fractal_size].emplace_back(fractal_size + fractal_size / 2 + y, fractal_size / 2 + x);
			jumps[fractal_size].emplace_back(fractal_size + fractal_size / 2 - y, -fractal_size / 2 - x);
		}
	}

	int N, M, F;
	scanf("%d%d%d", &N, &M, &F);
	int answer = 0;
	while (F--) {
		int x, y, fractal_size;
		scanf("%d%d%d", &x, &y, &fractal_size);
		--x;
		--y;
		answer += std::gcd(x, y) == 1;
		for (const auto &[dx, dy] : jumps[fractal_size]) {
			answer += std::gcd(x - dx, y - dy) == 1;
		}
	}
	printf("%d\n", answer);
	return 0;
}

Compilation message (stderr)

squirrel.cpp: In function 'int main()':
squirrel.cpp:33:7: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   33 |  scanf("%d%d%d", &N, &M, &F);
      |  ~~~~~^~~~~~~~~~~~~~~~~~~~~~
squirrel.cpp:37:8: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   37 |   scanf("%d%d%d", &x, &y, &fractal_size);
      |   ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 15 / 15
• Subtask 2: 10 / 10
• Subtask 3: 0 / 25
• Subtask 4: 0 / 50