結果
問題 | No.497 入れ子の箱 |
ユーザー | Pachicobue |
提出日時 | 2018-01-24 16:27:42 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
WA
|
実行時間 | - |
コード長 | 3,422 bytes |
コンパイル時間 | 2,169 ms |
コンパイル使用メモリ | 214,908 KB |
実行使用メモリ | 24,192 KB |
最終ジャッジ日時 | 2024-06-07 21:43:21 |
合計ジャッジ時間 | 16,859 ms |
ジャッジサーバーID (参考情報) |
judge3 / judge4 |
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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
6,812 KB |
testcase_01 | AC | 2 ms
6,948 KB |
testcase_02 | AC | 2 ms
6,940 KB |
testcase_03 | AC | 745 ms
24,192 KB |
testcase_04 | AC | 739 ms
23,808 KB |
testcase_05 | AC | 754 ms
24,064 KB |
testcase_06 | AC | 757 ms
23,936 KB |
testcase_07 | WA | - |
testcase_08 | WA | - |
testcase_09 | WA | - |
testcase_10 | WA | - |
testcase_11 | WA | - |
testcase_12 | WA | - |
testcase_13 | WA | - |
testcase_14 | WA | - |
testcase_15 | WA | - |
testcase_16 | WA | - |
testcase_17 | WA | - |
testcase_18 | WA | - |
testcase_19 | WA | - |
testcase_20 | WA | - |
testcase_21 | WA | - |
testcase_22 | WA | - |
testcase_23 | AC | 28 ms
6,944 KB |
testcase_24 | AC | 28 ms
6,940 KB |
testcase_25 | AC | 2 ms
6,940 KB |
testcase_26 | AC | 2 ms
6,940 KB |
testcase_27 | WA | - |
testcase_28 | WA | - |
testcase_29 | WA | - |
testcase_30 | AC | 43 ms
6,940 KB |
testcase_31 | AC | 46 ms
6,940 KB |
ソースコード
#include <bits/stdc++.h> #define VARNAME(x) #x #define show(x) cerr << #x << " = " << x << endl using namespace std; using ll = long long; using ld = long double; template <typename T> vector<T> Vec(int n, T v) { return vector<T>(n, v); } template <class... Args> auto Vec(int n, Args... args) { auto val = Vec(args...); return vector<decltype(val)>(n, move(val)); } template <typename T> ostream& operator<<(ostream& os, const vector<T>& v) { os << "sz:" << v.size() << "\n["; for (const auto& p : v) { os << p << ","; } os << "]\n"; return os; } template <typename S, typename T> ostream& operator<<(ostream& os, const pair<S, T>& p) { os << "(" << p.first << "," << p.second << ")"; return os; } constexpr ll MOD = (ll)1e9 + 7LL; constexpr ld PI = static_cast<ld>(3.1415926535898); template <typename T> constexpr T INF = numeric_limits<T>::max() / 10; struct CostGraph { using T = ll; CostGraph(const int v) : V{v} { edge.resize(v); rev_edge.resize(v); } struct Edge { Edge(const int from, const int to, const T cost) : from{from}, to{to}, cost{cost} {} const int from; const int to; const T cost; bool operator<(const Edge& e) const { return cost != e.cost ? cost < e.cost : to < e.to; } }; void addEdge(const int from, const int to, const T cost = 1) { edge[from].push_back(Edge{from, to, cost}); rev_edge[to].push_back(Edge(to, from, cost)); } vector<vector<Edge>> edge; vector<vector<Edge>> rev_edge; const int V; }; bool BellmanFord(const CostGraph& g, const int s, vector<CostGraph::T>& d) { using T = CostGraph::T; assert(s < g.V); assert(d.size() == g.V); for (int i = 0; i < g.V; i++) { d[i] = INF<T>; } d[s] = 0; bool no_negative_loop = true; for (int i = 0; i < g.V; i++) { for (int v = 0; v < g.V; v++) { if (d[v] != INF<T>) { for (const auto& e : g.edge[v]) { if (d[e.to] > d[e.from] + e.cost) { d[e.to] = d[v] + e.cost; if (i == g.V - 1) { d[e.to] = -INF<T>; // Confirm " -INF < min(possible_cost) * V " no_negative_loop = false; } } } } } } return no_negative_loop; } struct Box { Box(ll x, ll y, ll z) : x(x), y(y), z(z) {} ll x, y, z; }; int main() { cin.tie(0); ios::sync_with_stdio(false); int N; cin >> N; vector<Box> box; for (int i = 0; i < N; i++) { ll x, y, z; cin >> x >> y >> z; box.push_back(Box(x, y, z)); } CostGraph g(N + 2); const int s = N; const int t = N + 1; for (int i = 0; i < N; i++) { g.addEdge(s, i, -1); g.addEdge(i, t, 0); for (int j = 0; j < N; j++) { vector<ll> v{box[j].x, box[j].y, box[j].z}; do { if (box[i].x > v[0] and box[i].y > v[1] and box[i].z > v[2]) { g.addEdge(i, j, -1); break; } } while (next_permutation(v.begin(), v.end())); } } vector<ll> d(N + 2, INF<ll>); BellmanFord(g, s, d); cout << -d[t] << endl; return 0; }