Submission #1161477

#	Time	Username	Problem	Language	Result	Execution time	Memory
1161477		xnqs	Nice sequence (IZhO18_sequence)	C++20	15 / 100	4 ms	1096 KiB

sequence

#include <iostream>
#include <fstream>
#include <vector>
#include <queue>
#include <utility>
#include <algorithm>

void solve() {
	int n, m;
	std::cin >> n >> m;

	std::vector<int> ret;

	bool swapped = 0;
	if (n > m) {
		std::swap(n, m);
		swapped = 1;
	}

	if (n == 1 || n == m) {
		ret.assign(m-1, -1);
	}
	else if (n == 2) {
		int64_t sum = 0;
		for (int i = 0; i < m-(m%2==0); i++) {
			ret.emplace_back((i&1) ? -m-1 : m);
			sum += ret.back();
		}
	}
	else {
		std::vector<int> arr(n, 0);
		arr[0] = 1;
		arr[1] = m-1;
		for (int i = 2; i < n-1; i++) {
			arr[i] = -1;
		}
		arr[n-1] = -1 - m + n - 3;

		int64_t sum = 0;
		for (int i = 0; i < m-(m%n==0); i++) {
			ret.emplace_back(arr[i%n]);
			sum += ret.back();
		}

		if (sum - arr[0] + arr[ret.size()%n] > 0) {
			ret.emplace_back(arr[ret.size()%n]);
		}
	}

	if (swapped) {
		for (auto& i : ret) {
			i *= -1;
		}
	}

	std::cout << ret.size() << "\n";
	for (const auto& i : ret) {
		std::cout << i << " ";
	}
	std::cout << "\n";
}

int main() {
	std::ios_base::sync_with_stdio(false);
	std::cin.tie(NULL);
	std::cout.tie(NULL);

	int t;
	std::cin >> t;

	while (t--) {
		solve();
	}
}

• Subtask 1: 6 / 6
• Subtask 2: 9 / 9
• Subtask 3: 0 / 14
• Subtask 4: 0 / 15
• Subtask 5: 0 / 14
• Subtask 6: 0 / 18
• Subtask 7: 0 / 24