結果
問題 | No.119 旅行のツアーの問題 |
ユーザー | kroton |
提出日時 | 2015-01-07 00:07:26 |
言語 | C++11 (gcc 11.4.0) |
結果 |
AC
|
実行時間 | 2 ms / 5,000 ms |
コード長 | 1,691 bytes |
コンパイル時間 | 1,616 ms |
コンパイル使用メモリ | 171,584 KB |
実行使用メモリ | 6,944 KB |
最終ジャッジ日時 | 2024-06-01 06:48:54 |
合計ジャッジ時間 | 2,446 ms |
ジャッジサーバーID (参考情報) |
judge3 / judge1 |
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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
6,816 KB |
testcase_01 | AC | 2 ms
6,940 KB |
testcase_02 | AC | 2 ms
6,940 KB |
testcase_03 | AC | 1 ms
6,944 KB |
testcase_04 | AC | 1 ms
6,940 KB |
testcase_05 | AC | 2 ms
6,940 KB |
testcase_06 | AC | 2 ms
6,940 KB |
testcase_07 | AC | 2 ms
6,940 KB |
testcase_08 | AC | 2 ms
6,940 KB |
testcase_09 | AC | 1 ms
6,940 KB |
testcase_10 | AC | 2 ms
6,944 KB |
testcase_11 | AC | 2 ms
6,944 KB |
testcase_12 | AC | 2 ms
6,940 KB |
testcase_13 | AC | 2 ms
6,940 KB |
testcase_14 | AC | 1 ms
6,940 KB |
testcase_15 | AC | 2 ms
6,944 KB |
testcase_16 | AC | 2 ms
6,940 KB |
testcase_17 | AC | 2 ms
6,940 KB |
testcase_18 | AC | 2 ms
6,940 KB |
testcase_19 | AC | 2 ms
6,944 KB |
testcase_20 | AC | 2 ms
6,940 KB |
testcase_21 | AC | 2 ms
6,940 KB |
testcase_22 | AC | 2 ms
6,940 KB |
コンパイルメッセージ
main.cpp: In instantiation of ‘void Dinic<V, INF, MAXV>::add_edge(int, int, V) [with V = int; V INF = 33554432; int MAXV = 200]’: main.cpp:88:17: required from here main.cpp:49:56: warning: narrowing conversion of ‘(&((Dinic<int, 33554432, 200>*)this)->Dinic<int, 33554432, 200>::G.std::array<std::vector<Dinic<int, 33554432, 200>::edge, std::allocator<Dinic<int, 33554432, 200>::edge> >, 200>::operator[](((std::array<std::vector<Dinic<int, 33554432, 200>::edge, std::allocator<Dinic<int, 33554432, 200>::edge> >, 200>::size_type)to)))->std::vector<Dinic<int, 33554432, 200>::edge, std::allocator<Dinic<int, 33554432, 200>::edge> >::size()’ from ‘std::vector<Dinic<int, 33554432, 200>::edge, std::allocator<Dinic<int, 33554432, 200>::edge> >::size_type’ {aka ‘long unsigned int’} to ‘int’ [-Wnarrowing] 49 | G[from].push_back((edge){to, G[to].size(), cap}); | ~~~~~~~~~~^~ main.cpp:50:61: warning: narrowing conversion of ‘((&((Dinic<int, 33554432, 200>*)this)->Dinic<int, 33554432, 200>::G.std::array<std::vector<Dinic<int, 33554432, 200>::edge, std::allocator<Dinic<int, 33554432, 200>::edge> >, 200>::operator[](((std::array<std::vector<Dinic<int, 33554432, 200>::edge, std::allocator<Dinic<int, 33554432, 200>::edge> >, 200>::size_type)from)))->std::vector<Dinic<int, 33554432, 200>::edge, std::allocator<Dinic<int, 33554432, 200>::edge> >::size() - 1)’ from ‘std::vector<Dinic<int, 33554432, 200>::edge, std::allocator<Dinic<int, 33554432, 200>::edge> >::size_type’ {aka ‘long unsigned int’} to ‘int’ [-Wnarrowing] 50 | G[to].push_back((edge){from, G[from].size() - 1, 0}); | ~~~~~~~~~~~~~~~^~~
ソースコード
#include <bits/stdc++.h> using namespace std; template<class V, V INF, int MAXV> class Dinic { private: struct edge { int to, rev; V cap; }; array<vector<edge>, MAXV> G; array<int, MAXV> level, iter; void bfs(int s){ level.fill(-1); queue<int> Q; level[s] = 0; Q.push(s); while(!Q.empty()){ int v = Q.front(); Q.pop(); for(const auto &e : G[v]){ if(e.cap > 0 && level[e.to] < 0){ level[e.to] = level[v] + 1; Q.push(e.to); } } } } V dfs(int v, int t, V f){ if(v == t)return f; for(int &i=iter[v];i<G[v].size();i++){ auto &e = G[v][i]; if(e.cap > 0 && level[v] < level[e.to]){ V d = dfs(e.to, t, min(f, e.cap)); if(d > 0){ e.cap -= d; G[e.to][e.rev].cap += d; return d; } } } return 0; } public: Dinic(){} void add_edge(int from, int to, V cap){ G[from].push_back((edge){to, G[to].size(), cap}); G[to].push_back((edge){from, G[from].size() - 1, 0}); } V max_flow(int s, int t){ V flow = 0; for(;;){ bfs(s); if(level[t] < 0)return flow; iter.fill(0); V f; while((f = dfs(s, t, INF)) > 0){ flow += f; } } } }; int N, B[100], C[100]; int M, D[1000], E[1000]; int main(){ const int INF = 1 << 25; cin >> N; for(int i=0;i<N;i++) cin >> B[i] >> C[i]; cin >> M; for(int i=0;i<M;i++) cin >> D[i] >> E[i]; Dinic<int, INF, 200> dinic; int s = 2 * N, t = s + 1; int res = 0; for(int i=0;i<N;i++){ dinic.add_edge(s, i, B[i]); dinic.add_edge(i, N+i, INF); dinic.add_edge(N+i, t, C[i]); res += B[i] + C[i]; } for(int i=0;i<M;i++){ dinic.add_edge(D[i], N+E[i], INF); } res -= dinic.max_flow(s, t); cout << res << endl; return 0; }