#609118 (C++17) No.1364 [Renaming] Road to Cherry from Zelkova

提出ソース

結果

問題	No.1364 [Renaming] Road to Cherry from Zelkova
ユーザー	kaikey
提出日時	2021-01-22 23:28:17
言語	C++17 (gcc 12.3.0 + boost 1.83.0)
結果	WA
実行時間	-
コード長	5,647 bytes
コンパイル時間	2,758 ms
コンパイル使用メモリ	219,404 KB
実行使用メモリ	24,388 KB
最終ジャッジ日時	2023-08-27 22:49:54
合計ジャッジ時間	9,289 ms
ジャッジサーバーID （参考情報）	judge15 / judge12

このコードへのチャレンジ
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テストケース

テストケース表示

入力	結果	実行時間実行使用メモリ
testcase_00	AC	2 ms 4,380 KB
testcase_01	AC	2 ms 4,376 KB
testcase_02	AC	1 ms 4,380 KB
testcase_03	AC	2 ms 4,376 KB
testcase_04	AC	1 ms 4,380 KB
testcase_05	AC	2 ms 4,384 KB
testcase_06	AC	1 ms 4,380 KB
testcase_07	AC	2 ms 4,380 KB
testcase_08	AC	8 ms 4,752 KB
testcase_09	AC	4 ms 4,380 KB
testcase_10	AC	8 ms 4,484 KB
testcase_11	AC	7 ms 4,536 KB
testcase_12	AC	7 ms 4,384 KB
testcase_13	AC	122 ms 18,036 KB
testcase_14	AC	163 ms 17,556 KB
testcase_15	AC	163 ms 19,460 KB
testcase_16	AC	113 ms 14,064 KB
testcase_17	AC	55 ms 13,884 KB
testcase_18	AC	209 ms 24,272 KB
testcase_19	AC	206 ms 24,244 KB
testcase_20	AC	207 ms 24,388 KB
testcase_21	AC	206 ms 24,240 KB
testcase_22	AC	206 ms 24,280 KB
testcase_23	AC	35 ms 9,092 KB
testcase_24	AC	28 ms 5,772 KB
testcase_25	AC	92 ms 12,300 KB
testcase_26	AC	157 ms 16,064 KB
testcase_27	AC	97 ms 12,032 KB
testcase_28	AC	64 ms 10,120 KB
testcase_29	AC	88 ms 12,048 KB
testcase_30	AC	64 ms 10,200 KB
testcase_31	AC	46 ms 10,004 KB
testcase_32	AC	67 ms 10,756 KB
testcase_33	AC	142 ms 14,732 KB
testcase_34	AC	133 ms 15,992 KB
testcase_35	WA	-
testcase_36	WA	-
testcase_37	AC	65 ms 9,668 KB
testcase_38	AC	87 ms 11,608 KB
testcase_39	AC	88 ms 11,244 KB
testcase_40	AC	87 ms 11,236 KB
testcase_41	AC	87 ms 11,092 KB
testcase_42	AC	88 ms 11,304 KB
testcase_43	AC	57 ms 19,564 KB
testcase_44	AC	47 ms 17,576 KB
testcase_45	AC	51 ms 17,780 KB
testcase_46	AC	12 ms 13,584 KB
testcase_47	WA	-

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ソースコード

raw source code

#include <bits/stdc++.h>
#include <random>
using namespace std; typedef unsigned long long _ulong; typedef long long int lint; typedef pair<lint, lint> plint; typedef pair<double long, double long> pld;
#define ALL(x) (x).begin(), (x).end()
#define SZ(x) ((lint)(x).size())
#define FOR(i, begin, end) for(lint i=(begin),i##_end_=(end);i<i##_end_;++i)
#define IFOR(i, begin, end) for(lint i=(end)-1,i##_begin_=(begin);i>=i##_begin_;--i)
#define REP(i, n) FOR(i,0,n)
#define IREP(i, n) IFOR(i,0,n)
#define endk '\n'
#define fi first
#define se second
struct fast_ios { fast_ios() { cin.tie(nullptr), ios::sync_with_stdio(false), cout << fixed << setprecision(20); }; } fast_ios_;
template<class T> auto add = [](T a, T b) -> T { return a + b; };
template<class T> auto f_max = [](T a, T b) -> T { return max(a, b); };
template<class T> auto f_min = [](T a, T b) -> T { return min(a, b); };
template<class T> using V = vector<T>;
using Vl = V<lint>; using VVl = V<Vl>;
template< typename T > ostream& operator<<(ostream& os, const vector< T >& v) {
	for (int i = 0; i < (int)v.size(); i++) os << v[i] << (i + 1 != v.size() ? " " : "");
	return os;
}
template< typename T >istream& operator>>(istream& is, vector< T >& v) {
	for (T& in : v) is >> in;
	return is;
}
template<class T> bool chmax(T& a, const T& b) { if (a < b) { a = b; return 1; } return 0; }
template<class T> bool chmin(T& a, const T& b) { if (b < a) { a = b; return 1; } return 0; }
lint gcd(lint a, lint b) { if (b == 0) return a; else return gcd(b, a % b); }
lint ceil(lint a, lint b) { return (a + b - 1) / b; }
lint digit(lint a) { return (lint)log10(a); }
lint e_dist(plint a, plint b) { return abs(a.fi - b.fi) * abs(a.fi - b.fi) + abs(a.se - b.se) * abs(a.se - b.se); }
lint m_dist(plint a, plint b) { return abs(a.fi - b.fi) + abs(a.se - b.se); }
void Worshall_Floyd(VVl& g) { REP(k, SZ(g)) REP(i, SZ(g)) REP(j, SZ(g)) chmin(g[i][j], g[i][k] + g[k][j]); }
const lint MOD = 1e9 + 7, INF = 1e9 + 1;
lint dx[8] = { 1, 0, -1, 0, 1, -1, 1, -1 }, dy[8] = { 0, 1, 0, -1, -1, -1, 1, 1 };
bool YN(bool flag) { cout << (flag ? "YES" : "NO") << endk; return flag; } bool yn(bool flag) { cout << (flag ? "Yes" : "No") << endk; return flag; }
struct Edge {
	lint from, to;
	lint cost;
	Edge(lint u, lint v, lint c) {
		cost = c;
		from = u;
		to = v;
	}
	bool operator<(const Edge& e) const {
		return cost < e.cost;
	}
};
struct WeightedEdge {
	lint to;
	lint cost;
	WeightedEdge(lint v, lint c = 1) {
		to = v;
		cost = c;
	}
	bool operator<(const WeightedEdge& e) const {
		return cost < e.cost;
	}
};
using WeightedGraph = V<V<WeightedEdge>>;
typedef pair<lint, plint> tlint;
typedef pair<plint, plint> qlint;
typedef pair<string, lint> valstring;


template <std::int_fast64_t Modulus>
class modint
{
	using u64 = std::int_fast64_t;

public:
	u64 a;
	constexpr modint(const u64 x = 0) noexcept : a(x% Modulus) {}
	constexpr u64& value() noexcept { return a; }
	constexpr const u64& value() const noexcept { return a; }
	constexpr modint operator+(const modint rhs) const noexcept
	{
		return modint(*this) += rhs;
	}
	constexpr modint operator-(const modint rhs) const noexcept
	{
		return modint(*this) -= rhs;
	}
	constexpr modint operator*(const modint rhs) const noexcept
	{
		return modint(*this) *= rhs;
	}
	constexpr modint operator/(const modint rhs) const noexcept
	{
		return modint(*this) /= rhs;
	}
	constexpr modint& operator+=(const modint rhs) noexcept
	{
		a += rhs.a;
		if (a >= Modulus)
		{
			a -= Modulus;
		}
		return *this;
	}
	constexpr modint& operator-=(const modint rhs) noexcept
	{
		if (a < rhs.a)
		{
			a += Modulus;
		}
		a -= rhs.a;
		return *this;
	}
	constexpr modint& operator*=(const modint rhs) noexcept
	{
		a = a * rhs.a % Modulus;
		return *this;
	}
	constexpr modint& operator/=(modint rhs) noexcept
	{
		u64 exp = Modulus - 2;
		while (exp)
		{
			if (exp % 2)
			{
				*this *= rhs;
			}
			rhs *= rhs;
			exp /= 2;
		}
		return *this;
	}
};
typedef modint<MOD> ModInt;

ModInt mod_pow(ModInt x, lint n) {
	ModInt ret = 1;
	while (n > 0) {
		if (n & 1) (ret *= x);
		(x *= x);
		n >>= 1;
	}
	return ret;
}

ModInt func[200000];
void funcinit(int N)
{
	func[0] = 1;
	for (int i = 1; i <= N; i++)
	{
		func[i] = func[i - 1] * i;
	}
}
ModInt comb(ModInt n, ModInt r)
{
	if (n.a <= 0 || n.a < r.a)
	{
		return 1;
	}
	return func[n.a] / (func[r.a] * func[(n - r).a]);
}

struct Topological_Sort {
public:

	Topological_Sort(int _n) : G(_n, Vl()), indegree(_n, 0), N(_n) {}

	void add_edge(int u, int v) {
		G[u].push_back(v);
		indegree[v]++;
	}

	Vl get() {
		Vl sorted_vertices;
		Vl tmp_indegree = indegree;
		queue<int> que;
		REP(i, N) {
			if (tmp_indegree[i] == 0) que.push(i);
		}

		while (!que.empty()) {
			int v = que.front(); que.pop();
			REP(i, SZ(G[v])) {
				int u = G[v][i];
				tmp_indegree[u]--;
				if (tmp_indegree[u] == 0) que.push(u);
			}
			sorted_vertices.push_back(v);
		}

		return sorted_vertices;
	}
private:
	VVl G;
	Vl indegree;
	int N;
};

lint N, M, u, v, l, a;
int main() {
	cin >> N >> M;
	VVl to(N + 1, Vl());
	V<V<tlint>> rev(N + 1, V<tlint>());
	Topological_Sort topo(N + 1);
	REP(i, M) {
		cin >> u >> v >> l >> a;
		topo.add_edge(u, v);
		rev[v].push_back({ u, {l, a} });
	}
	auto vec = topo.get();
	if (SZ(vec) != N + 1) {
		cout << "INF" << endk;
	}
	else {
		reverse(ALL(vec));
		V<ModInt> dp(N + 1);
		V<ModInt> cnt(N + 1, 0);
		cnt[N] = 1;
		for (lint v : vec) {
			for (auto nxt : rev[v]) {
				dp[nxt.first] += dp[v] * nxt.second.second + (cnt[v] * nxt.second.second) * nxt.second.first;
				cnt[nxt.first] += cnt[v] * nxt.second.second;
			}
		}
		ModInt ans = 0;
		cout << dp[0].a << endk;
	}
}

yukicoder

結果

テストケース

ソースコード