#844605 (C++17) No.807 umg tours

• 問題: No.807 umg tours
• ユーザー: noshi91
• 提出日時: 2023-02-28 17:51:53
• 言語: C++17 (gcc 12.3.0 + boost 1.83.0)
• 結果: AC
• 実行時間: 600 ms / 4,000 ms
• コード長: 3,138 bytes
• コンパイル時間: 2,212 ms
• コンパイル使用メモリ: 209,884 KB
• 実行使用メモリ: 42,152 KB
• 最終ジャッジ日時: 2024-09-15 20:28:53
• 合計ジャッジ時間: 10,453 ms
• ジャッジサーバーID （参考情報）: judge1 / judge4

入力	結果	実行時間; 実行使用メモリ
testcase_00	AC	2 ms; 5,248 KB
testcase_01	AC	2 ms; 5,376 KB
testcase_02	AC	2 ms; 5,376 KB
testcase_03	AC	3 ms; 5,376 KB
testcase_04	AC	1 ms; 5,376 KB
testcase_05	AC	2 ms; 5,376 KB
testcase_06	AC	3 ms; 5,376 KB
testcase_07	AC	2 ms; 5,376 KB
testcase_08	AC	2 ms; 5,376 KB
testcase_09	AC	1 ms; 5,376 KB
testcase_10	AC	2 ms; 5,376 KB
testcase_11	AC	325 ms; 32,448 KB
testcase_12	AC	327 ms; 24,540 KB
testcase_13	AC	435 ms; 33,312 KB
testcase_14	AC	184 ms; 16,372 KB
testcase_15	AC	141 ms; 13,568 KB
testcase_16	AC	463 ms; 35,276 KB
testcase_17	AC	593 ms; 40,824 KB
testcase_18	AC	572 ms; 41,008 KB
testcase_19	AC	580 ms; 39,372 KB
testcase_20	AC	355 ms; 22,656 KB
testcase_21	AC	347 ms; 23,424 KB
testcase_22	AC	131 ms; 12,032 KB
testcase_23	AC	108 ms; 10,112 KB
testcase_24	AC	320 ms; 30,372 KB
testcase_25	AC	600 ms; 42,152 KB

ソースコード

//#define NDEBUG
#include <cstddef>
#include <cstdint>
#include <bits/stdc++.h>

namespace n91 {

	using i8 = std::int_least8_t;
	using i32 = std::int_least32_t;
	using i64 = std::int_least64_t;
	using u8 = std::uint_least8_t;
	using u32 = std::uint_least32_t;
	using u64 = std::uint_least64_t;
	using isize = std::ptrdiff_t;
	using usize = std::size_t;

	class rep {
		const usize f, l;

	public:
		class itr {
			friend rep;
			usize i;
			constexpr itr(const usize x) noexcept : i(x) {}

		public:
			void operator++() noexcept { ++i; }
			constexpr usize operator*() const noexcept { return i; }
			constexpr bool operator!=(const itr x) const noexcept { return i != x.i; }
		};
		constexpr rep(const usize first, const usize last) noexcept
			: f(first), l(last) {}
		constexpr itr begin() const noexcept { return itr(f); }
		constexpr itr end() const noexcept { return itr(l); }
	};
	class revrep {
		const usize f, l;

	public:
		class itr {
			friend revrep;
			usize i;
			constexpr itr(usize x) noexcept : i(x) {}

		public:
			void operator++() noexcept { --i; }
			constexpr usize operator*() const noexcept { return i; }
			constexpr bool operator!=(const itr x) const noexcept { return i != x.i; }
		};
		constexpr revrep(usize first, usize last) noexcept : f(--first), l(--last) {}
		constexpr itr begin() const noexcept { return itr(l); }
		constexpr itr end() const noexcept { return itr(f); }
	};
	template <class T> using vec_alias = std::vector<T>;
	template <class T> auto md_vec(const usize n, const T &value) {
		return std::vector<T>(n, value);
	}
	template <class... Args> auto md_vec(const usize n, Args... args) {
		return std::vector<decltype(md_vec(args...))>(n, md_vec(args...));
	}
	template <class T> constexpr T difference(const T &a, const T &b) {
		return a < b ? b - a : a - b;
	}

} // namespace n91

#include <algorithm>
#include <iostream>
#include <utility>
#include <string>
#include <queue>

namespace n91 {

	void main_() {
		usize n, m;
		std::cin >> n >> m;
		struct edge {
			usize to;
			u64 cost;
			edge(usize x, u64 y) :to(x), cost(y) {}
			bool operator<(const edge &r)const {
				return r.cost < cost;
			}
		};
		std::vector<std::vector<edge>> g(n * 2);
		while (m--) {
			usize a, b;
			u64 c;
			std::cin >> a >> b >> c;
			--a;
			--b;
			g[a].emplace_back(b, c);
			g[b].emplace_back(a, c);
			g[a].emplace_back(n + b, 0);
			g[b].emplace_back(n + a, 0);
			g[n + a].emplace_back(n + b, c);
			g[n + b].emplace_back(n + a, c);
		}
		std::priority_queue<edge> que;
		static constexpr u64 INF = std::numeric_limits<u64>::max();
		std::vector<u64> dist(n * 2, INF);
		dist[0] = 0;
		que.emplace(0, 0);
		while (!que.empty()) {
			const usize v = que.top().to;
			const u64 d = que.top().cost;
			que.pop();
			if (dist[v] < d) {
				continue;
			}
			for (const auto &e : g[v]) {
				if (d + e.cost < dist[e.to]) {
					dist[e.to] = d + e.cost;
					que.emplace(e.to, dist[e.to]);
				}
			}
		}
		std::cout << 0 << std::endl;
		for (const auto i : rep(1, n)) {
			std::cout << dist[i] + dist[i + n] << std::endl;
		}
	}

} // namespace n91

int main() {
	n91::main_();

	return 0;
}