結果
問題 | No.177 制作進行の宮森あおいです! |
ユーザー | yuppe19 😺 |
提出日時 | 2017-02-05 16:57:13 |
言語 | C++11 (gcc 11.4.0) |
結果 |
AC
|
実行時間 | 2 ms / 2,000 ms |
コード長 | 5,741 bytes |
コンパイル時間 | 1,186 ms |
コンパイル使用メモリ | 92,536 KB |
実行使用メモリ | 5,376 KB |
最終ジャッジ日時 | 2024-06-06 14:29:54 |
合計ジャッジ時間 | 1,756 ms |
ジャッジサーバーID (参考情報) |
judge1 / judge5 |
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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 | 1 ms
5,248 KB |
testcase_01 | AC | 1 ms
5,376 KB |
testcase_02 | AC | 2 ms
5,376 KB |
testcase_03 | AC | 2 ms
5,376 KB |
testcase_04 | AC | 1 ms
5,376 KB |
testcase_05 | AC | 2 ms
5,376 KB |
testcase_06 | AC | 2 ms
5,376 KB |
testcase_07 | AC | 2 ms
5,376 KB |
testcase_08 | AC | 1 ms
5,376 KB |
testcase_09 | AC | 2 ms
5,376 KB |
testcase_10 | AC | 2 ms
5,376 KB |
testcase_11 | AC | 1 ms
5,376 KB |
testcase_12 | AC | 1 ms
5,376 KB |
testcase_13 | AC | 1 ms
5,376 KB |
testcase_14 | AC | 1 ms
5,376 KB |
testcase_15 | AC | 1 ms
5,376 KB |
コンパイルメッセージ
main.cpp: In function ‘int main()’: main.cpp:206:18: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result] 206 | int w, n; scanf("%d%d", &w, &n); | ~~~~~^~~~~~~~~~~~~~~~ main.cpp:208:33: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result] 208 | for(int i=0; i<n; ++i) { scanf("%d", &J[i]); } | ~~~~~^~~~~~~~~~~~~ main.cpp:209:15: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result] 209 | int m; scanf("%d", &m); | ~~~~~^~~~~~~~~~ main.cpp:211:33: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result] 211 | for(int i=0; i<m; ++i) { scanf("%d", &C[i]); } | ~~~~~^~~~~~~~~~~~~ main.cpp:214:17: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result] 214 | int q; scanf("%d", &q); | ~~~~~^~~~~~~~~~ main.cpp:216:19: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result] 216 | int x; scanf("%d", &x); | ~~~~~^~~~~~~~~~
ソースコード
#include <iostream> #include <algorithm> #include <array> #include <tuple> #include <queue> using namespace std; constexpr int inf = 987654321; struct Edge { int dst, rev; int capa; int cost; }; class Graph { protected: int size; vector<vector<Edge>> g; public: Graph(int size) : size(size) { g.resize(size); } void add_edge(int src, int dst, int capa); void add_edge(int src, int dst, int capa, int cost); int max_flow(int s, int t) { throw; } int min_cost_flow_ford(int s, int t, int flow); // ベルマンフォード int min_cost_flow_dijk(int s, int t, int flow); // ダイクストラ }; class FordFulkerson : public Graph { vector<bool> used; int dfs(int v, int t, int flow); public: FordFulkerson(int size) : Graph(size) {} int max_flow(int s, int t); }; class Dinic : public Graph { vector<int> level, iter; void bfs(int s); int dfs(int v, int t, int flow); public: Dinic(int size) : Graph(size) {} int max_flow(int s, int t); }; void Graph::add_edge(int src, int dst, int capa) { add_edge(src, dst, capa, 0); } void Graph::add_edge(int src, int dst, int capa, int cost) { g[src].push_back(Edge({dst, int(g[dst].size()), capa, cost})); g[dst].push_back(Edge({src, int(g[src].size())-1, 0, -cost})); } int Graph::min_cost_flow_ford(int s, int t, int flow) { int res = 0; vector<int> prev_v(size), prev_e(size); vector<int> dist; while(flow > 0) { dist.assign(size, inf); dist[s] = 0; bool update = true; while(update) { update = false; for(int v=0; v<size; ++v) { if(dist[v] == inf) { continue; } for(int i=0, n=g[v].size(); i<n; ++i) { Edge& e = g[v][i]; if(e.capa > 0 && dist[e.dst] > dist[v] + e.cost) { dist[e.dst] = dist[v] + e.cost; prev_v[e.dst] = v; prev_e[e.dst] = i; update = true; } } } } if(dist[t] == inf) { return inf; } int d = flow; for(int v=t; v!=s; v=prev_v[v]) { d = min(d, g[prev_v[v]][prev_e[v]].capa); } flow -= d; res += d * dist[t]; for(int v=t; v!=s; v=prev_v[v]) { Edge& e = g[prev_v[v]][prev_e[v]]; e.capa -= d; g[v][e.rev].capa += d; } } return res; } int Graph::min_cost_flow_dijk(int s, int t, int flow) { int res = 0; vector<int> prev_v(size), prev_e(size); vector<int> h(size); while(flow > 0) { vector<int> dist(size, inf); dist[s] = 0; queue<pair<int, int>> que; // 最短距離、番号 que.emplace(0, s); while(!que.empty()) { int c, v; tie(c, v) = que.front(); que.pop(); if(dist[v] < c) { continue; } for(int i=0; i<g[v].size(); ++i) { Edge& e = g[v][i]; if(e.capa > 0 && dist[e.dst] > dist[v] + e.cost + h[v] - h[e.dst]) { dist[e.dst] = dist[v] + e.cost + h[v] - h[e.dst]; prev_v[e.dst] = v; prev_e[e.dst] = i; que.emplace(dist[e.dst], e.dst); } } } if(dist[t] == inf) { return inf; } for(int v=0; v<size; ++v) { h[v] += dist[v]; } int d = flow; for(int v=t; v!=s; v=prev_v[v]) { d = min(d, g[prev_v[v]][prev_e[v]].capa); } flow -= d; res += d * h[t]; for(int v=t; v!=s; v=prev_v[v]) { Edge& e = g[prev_v[v]][prev_e[v]]; e.capa -= d; g[v][e.rev].capa += d; } } return res; } int FordFulkerson::dfs(int v, int t, int flow) { if(v == t) { return flow; } used[v] = true; for(Edge& e : g[v]) { if(used[e.dst] || e.capa <= 0) { continue; } int d = dfs(e.dst, t, min(flow, e.capa)); if(d > 0) { e.capa -= d; g[e.dst][e.rev].capa += d; return d; } } return 0; } int FordFulkerson::max_flow(int s, int t) { int res = 0; while(true) { used.assign(size, false); int flow = dfs(s, t, inf); if(flow == 0) { return res; } res += flow; if(res >= inf) { return inf; } } } void Dinic::bfs(int s) { level.assign(size, -1); queue<int> que; level[s] = 0; que.push(s); while(!que.empty()) { int v = que.front(); que.pop(); for(Edge& e : g[v]) { if(e.capa > 0 && level[e.dst] < 0) { level[e.dst] = level[v] + 1; que.push(e.dst); } } } } int Dinic::dfs(int v, int t, int flow) { if(v == t) { return flow; } for(int& i=iter[v], n=g[v].size(); i<n; ++i) { Edge& e = g[v][i]; if(e.capa <= 0 || level[v] >= level[e.dst]) { continue; } int d = dfs(e.dst, t, min(flow, e.capa)); if(d > 0) { e.capa -= d; g[e.dst][e.rev].capa += d; return d; } } return 0; } int Dinic::max_flow(int s, int t) { int res = 0; while(true) { bfs(s); if(level[t] < 0) { return res; } iter.assign(size, 0); int flow; while((flow = dfs(s, t, inf)) > 0) { res += flow; if(res >= inf) { return inf; } } } } int main(void) { int w, n; scanf("%d%d", &w, &n); vector<int> J(n); for(int i=0; i<n; ++i) { scanf("%d", &J[i]); } int m; scanf("%d", &m); vector<int> C(m); for(int i=0; i<m; ++i) { scanf("%d", &C[i]); } vector<vector<bool>> G(n, vector<bool>(m, true)); // G[n][m] for(int i=0; i<m; ++i) { int q; scanf("%d", &q); for(int j=0; j<q; ++j) { int x; scanf("%d", &x); G[--x][i] = false; } } Dinic graph(n + m + 2); int s = n + m, t = s + 1; for(int i=0; i<n; ++i) { graph.add_edge(s, i, J[i]); } for(int i=0; i<m; ++i) { graph.add_edge(n+i, t, C[i]); } for(int i=0; i<n; ++i) { for(int j=0; j<m; ++j) { if(G[i][j]) { graph.add_edge(i, n+j, inf); } } } int min_cut = graph.max_flow(s, t); bool able = min_cut >= w; puts(able ? "SHIROBAKO" : "BANSAKUTSUKITA"); return 0; }