結果

問題 No.3234 Infinite Propagation
コンテスト
ユーザー elphe
提出日時 2025-08-15 23:24:58
言語 C++23
(gcc 13.3.0 + boost 1.87.0)
結果
AC  
実行時間 18 ms / 2,000 ms
コード長 4,567 bytes
コンパイル時間 3,031 ms
コンパイル使用メモリ 288,748 KB
実行使用メモリ 13,704 KB
最終ジャッジ日時 2025-08-15 23:25:03
合計ジャッジ時間 4,117 ms
ジャッジサーバーID
（参考情報） 		judge6 / judge2
このコードへのチャレンジ
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ファイルパターン 結果
sample AC * 1
other AC * 18
権限があれば一括ダウンロードができます

ソースコード

diff # 

#include <bits/stdc++.h>

namespace MyLib
{
	template<typename T, class Picker, T default_value> class LiteralSegmentTree
	{
	protected:
		std::vector<std::vector<T>> containers;

	public:
		constexpr LiteralSegmentTree(const std::vector<T>& initializer)
		{
			containers.clear();

			if (initializer.size() == 0) return;
			else if (initializer.size() == 1) { containers.emplace_back(1, initializer[0]); return; }

			uint_fast32_t l = 0, r = 30;
			while (l + 1 < r)
			{
				const auto c = (l + r) >> 1;
				if (((uint_fast32_t)1 << c) < initializer.size())
					l = c;
				else
					r = c;
			}

			containers.emplace_back((uint_fast32_t)1 << r);

			uint_fast32_t i;
			for (i = 0; i != initializer.size(); ++i)
				containers[0][i] = initializer[i];
			for (; i != ((uint_fast32_t)1 << r); ++i)
				containers[0][i] = default_value;

			for (--r; r != 0; --r)
			{
				containers.emplace_back((uint_fast32_t)1 << r);
				for (i = 0; i != ((uint_fast32_t)1 << r); ++i)
					containers[containers.size() - 1][i] = Picker()(containers[containers.size() - 2][i << 1], containers[containers.size() - 2][(i << 1) | 1]);
			}
			containers.emplace_back(1, Picker()(containers[containers.size() - 1][0], containers[containers.size() - 1][1]));
		}

		constexpr LiteralSegmentTree(std::vector<T>&& initializer)
		{
			containers.clear();

			if (initializer.size() == 0) return;

			uint_fast32_t l = 0, r = 30;
			while (l + 1 < r)
			{
				const auto c = (l + r) >> 1;
				if (((uint_fast32_t)1 << c) < initializer.size())
					l = c;
				else
					r = c;
			}

			containers.emplace_back(std::move(initializer));
			containers[0].resize((uint_fast32_t)1 << r, default_value);

			uint_fast32_t i;
			for (--r; r != 0; --r)
			{
				containers.emplace_back((uint_fast32_t)1 << r);
				for (i = 0; i != ((uint_fast32_t)1 << r); ++i)
					containers[containers.size() - 1][i] = Picker()(containers[containers.size() - 2][i << 1], containers[containers.size() - 2][(i << 1) | 1]);
			}
			containers.emplace_back(1, Picker()(containers[containers.size() - 1][0], containers[containers.size() - 1][1]));
		}

		constexpr LiteralSegmentTree(const uint_fast32_t n) : LiteralSegmentTree<T, Picker, default_value>(std::vector<T>(n, default_value)) { }
		constexpr LiteralSegmentTree(const uint_fast32_t n, const T initial_value) : LiteralSegmentTree<T, Picker, default_value>(std::vector<T>(n, initial_value)) { }

		constexpr T operator[](uint_fast32_t index) const noexcept { return containers[0][index]; }

		constexpr uint_fast32_t size() const noexcept { return containers[0].size(); }
		constexpr uint_fast32_t layer() const noexcept { return containers.size(); }

		constexpr T update(uint_fast32_t index, const T value) noexcept
		{
			containers[0][index] = value;

			index >>= 1;
			for (uint_fast32_t i = 1; i != containers.size(); ++i, index >>= 1)
				containers[i][index] = Picker()(containers[i - 1][index << 1], containers[i - 1][(index << 1) | 1]);

			return value;
		}

		constexpr T range_pick_up(uint_fast32_t first_index, uint_fast32_t end_index) const noexcept
		{
			if (containers.size() == 0 || end_index > containers[0].size()) return default_value;

			T ret_l = default_value, ret_r = default_value;
			for (uint_fast32_t cur_layer = 0; first_index < end_index; first_index >>= 1, end_index >>= 1, ++cur_layer)
			{
				if (first_index & 1)
					ret_l = Picker()(ret_l, containers[cur_layer][first_index]), ++first_index;
				if (end_index & 1)
					ret_r = Picker()(containers[cur_layer][end_index - 1], ret_r);
			}

			return Picker()(ret_l, ret_r);
		}
	};
}

static inline constexpr const char* solve(const uint_fast32_t N, const std::vector<std::string>& X, const std::vector<std::string>& Y) noexcept
{
	uint_fast32_t length = 0;
	for (uint_fast32_t i = 0; i != N; ++i)
		length += Y[i].size();

	MyLib::LiteralSegmentTree<uint_fast32_t, std::plus<uint_fast32_t>, 0> lst(length + 1, 0);
	for (uint_fast32_t i = 0; i != N; ++i)
		if (X[i] == "a")
		{
			if (Y[i].find('a') != Y[i].npos)
				return "Yes";
			else
				lst.update(Y[i].size(), 1);
		}

	for (uint_fast32_t i = 0; i != N; ++i)
		if (X[i].find('a') == X[i].npos && lst.range_pick_up(X[i].size(), length + 1) > 0)
			return "Yes";

	return "No";
}

int main()
{
	std::cin.tie(nullptr);
	std::ios::sync_with_stdio(false);

	uint_fast32_t T, i;
	std::cin >> T;
	for (i = 0; i != T; ++i)
	{
		uint_fast32_t N, i;
		std::cin >> N;
		std::vector<std::string> X(N), Y(N);
		for (i = 0; i != N; ++i)
			std::cin >> X[i] >> Y[i];

		std::cout << solve(N, X, Y) << '\n';
	}

	return 0;
}
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