結果
問題 | No.2287 ++ -- *=a /=a |
ユーザー |
|
提出日時 | 2023-04-22 18:16:54 |
言語 | C++17 (gcc 13.3.0 + boost 1.87.0) |
結果 |
RE
|
実行時間 | - |
コード長 | 4,130 bytes |
コンパイル時間 | 1,513 ms |
コンパイル使用メモリ | 101,308 KB |
最終ジャッジ日時 | 2025-02-12 13:06:57 |
ジャッジサーバーID (参考情報) |
judge3 / judge4 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 1 |
other | AC * 21 RE * 6 |
ソースコード
#include <iostream> #include <cassert> #include <queue> #include <map> using namespace std; typedef long long ll; template <typename T = int> struct Graph { public: using value_type = T; struct Edge { int from, to; T cost; int id; operator int() const { return to; } }; Graph() {} Graph(int n) : n(n), m(0), g(n) {} void add_directed_edge(int from, int to, T cost = 1) { assert(0 <= from && from < n); assert(0 <= to && to < n); g[from].push_back((Edge){from, to, cost, m++}); } void add_undirected_edge(int from, int to, T cost = 1) { assert(0 <= from && from < n); assert(0 <= to && to < n); g[from].push_back((Edge){from, to, cost, m}); g[to].push_back((Edge){to, from, cost, m++}); } int size() { return n; } int edge_size() { return m; } inline const std::vector<Edge> &operator[](const int &u) const { return g[u]; } inline std::vector<Edge> &operator[](const int &u) { return g[u]; } private: int n, m; std::vector<std::vector<Edge>> g; }; template <typename GRAPH> std::vector<typename GRAPH::value_type> dijkstra(GRAPH &g, int s) { using T = typename GRAPH::value_type; using P = std::pair<T, int>; int n = g.size(); assert(s >= 0 && s < n); std::vector<T> d(n, -1); std::priority_queue<P, std::vector<P>, std::greater<P>> que; d[s] = 0; que.push(P(0, s)); while (que.size()) { auto [dist, u] = que.top(); que.pop(); if (d[u] < dist) { continue; } for (auto e : g[u]) { int v = e.to; if (d[v] == -1 || d[v] > d[u] + e.cost) { d[v] = d[u] + e.cost; que.push(P(d[v], v)); } } } return d; } int main() { int t; cin >> t; while (t--) { ll x, y, a; cin >> x >> y >> a; ll z = y; ll p = x, q = y; Graph<ll> g(100); map<ll, int> mp; int r[200]; int k = 0; if (!mp.count(x)) { r[k] = x; mp[x] = k++; } if (!mp.count(y)) { r[k] = y; mp[y] = k++; } if (!mp.count(y + 1)) { r[k] = y + 1; mp[y + 1] = k++; } while (x || y) { if (x <= y) { g.add_directed_edge(mp[x], mp[y], y - x); y /= a; if (!mp.count(y)) { r[k] = y; mp[y] = k++; } if (!mp.count(y + 1)) { r[k] = y + 1; mp[y + 1] = k++; } } else { g.add_directed_edge(mp[x], mp[y + 1], x - (y + 1)); if (!mp.count(x / a)) { r[k] = x / a; mp[x / a] = k++; } g.add_directed_edge(mp[x], mp[x / a], 1); x /= a; } } while (true) { ll w = z / a; g.add_directed_edge(mp[z], mp[z + 1], 1); g.add_directed_edge(mp[z + 1], mp[z], 1); g.add_directed_edge(mp[w], mp[z], z - w * a + 1); g.add_directed_edge(mp[w + 1], mp[z + 1], (w + 1) * a - (z + 1) + 1); if (z >= w + a) { g.add_directed_edge(mp[z], mp[w + 1], z - (w + 1)); g.add_directed_edge(mp[w + 1], mp[z], z - (w + 1)); } if (z >= (w / a + 1) * a) { g.add_directed_edge(mp[w / a + 1], mp[z], z - (w / a + 1) * a + 1); } if (!z) { break; } z = w; } vector<ll> d = dijkstra(g, mp[p]); cout << d[mp[q]] << endl; } }