結果
問題 | No.1640 簡単な色塗り |
ユーザー | harurun |
提出日時 | 2021-06-16 11:51:18 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
WA
|
実行時間 | - |
コード長 | 5,435 bytes |
コンパイル時間 | 956 ms |
コンパイル使用メモリ | 94,680 KB |
実行使用メモリ | 45,128 KB |
最終ジャッジ日時 | 2024-06-29 14:39:47 |
合計ジャッジ時間 | 30,251 ms |
ジャッジサーバーID (参考情報) |
judge2 / judge4 |
(要ログイン)
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 | WA | - |
testcase_01 | AC | 5 ms
9,612 KB |
testcase_02 | WA | - |
testcase_03 | WA | - |
testcase_04 | WA | - |
testcase_05 | WA | - |
testcase_06 | WA | - |
testcase_07 | WA | - |
testcase_08 | WA | - |
testcase_09 | AC | 6 ms
9,572 KB |
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 | WA | - |
testcase_24 | WA | - |
testcase_25 | WA | - |
testcase_26 | WA | - |
testcase_27 | WA | - |
testcase_28 | WA | - |
testcase_29 | WA | - |
testcase_30 | AC | 64 ms
13,648 KB |
testcase_31 | TLE | - |
testcase_32 | AC | 1,637 ms
32,928 KB |
testcase_33 | AC | 626 ms
25,280 KB |
testcase_34 | AC | 973 ms
29,492 KB |
testcase_35 | AC | 652 ms
26,820 KB |
testcase_36 | AC | 66 ms
13,516 KB |
testcase_37 | AC | 100 ms
15,568 KB |
testcase_38 | AC | 1,937 ms
35,588 KB |
testcase_39 | AC | 275 ms
20,116 KB |
testcase_40 | AC | 291 ms
20,228 KB |
testcase_41 | AC | 1,153 ms
31,708 KB |
testcase_42 | AC | 357 ms
22,808 KB |
testcase_43 | AC | 380 ms
24,588 KB |
testcase_44 | AC | 358 ms
23,364 KB |
testcase_45 | AC | 235 ms
20,940 KB |
testcase_46 | AC | 75 ms
14,832 KB |
testcase_47 | AC | 42 ms
12,536 KB |
testcase_48 | TLE | - |
testcase_49 | AC | 19 ms
10,780 KB |
testcase_50 | AC | 6 ms
9,436 KB |
testcase_51 | WA | - |
testcase_52 | TLE | - |
testcase_53 | TLE | - |
07_evil_01.txt | RE | - |
07_evil_02.txt | RE | - |
ソースコード
#include <algorithm> #include <atcoder/internal_queue> #include <cassert> #include <limits> #include <queue> #include <vector> #include <time.h> #include <chrono> #include <sys/time.h> #include <iostream> using namespace std; using namespace atcoder; #define ll long long #define INF 1000000000000000000 using std::cout; using std::endl; using std::chrono::duration_cast; using std::chrono::milliseconds; using std::chrono::seconds; using std::chrono::system_clock; //namespace atcoder { template <class Cap> struct mf_graph { public: mf_graph() : _n(0) {} mf_graph(int n) : _n(n), g(n) {} int add_edge(int from, int to, Cap cap) { assert(0 <= from && from < _n); assert(0 <= to && to < _n); assert(0 <= cap); int m = int(pos.size()); pos.push_back({from, int(g[from].size())}); int from_id = int(g[from].size()); int to_id = int(g[to].size()); if (from == to) to_id++; g[from].push_back(_edge{to, to_id, cap}); g[to].push_back(_edge{from, from_id, 0}); return m; } struct edge { int from, to; Cap cap, flow; }; edge get_edge(int i) { int m = int(pos.size()); assert(0 <= i && i < m); auto _e = g[pos[i].first][pos[i].second]; auto _re = g[_e.to][_e.rev]; return edge{pos[i].first, _e.to, _e.cap + _re.cap, _re.cap}; } std::vector<edge> edges() { int m = int(pos.size()); std::vector<edge> result; for (int i = 0; i < m; i++) { result.push_back(get_edge(i)); } return result; } void change_edge(int i, Cap new_cap, Cap new_flow) { int m = int(pos.size()); assert(0 <= i && i < m); assert(0 <= new_flow && new_flow <= new_cap); auto& _e = g[pos[i].first][pos[i].second]; auto& _re = g[_e.to][_e.rev]; _e.cap = new_cap - new_flow; _re.cap = new_flow; } Cap flow(int s, int t) { return flow(s, t, std::numeric_limits<Cap>::max()); } Cap flow(int s, int t, Cap flow_limit) { assert(0 <= s && s < _n); assert(0 <= t && t < _n); assert(s != t); std::vector<int> level(_n), iter(_n); internal::simple_queue<int> que; auto bfs = [&]() { std::fill(level.begin(), level.end(), -1); level[s] = 0; que.clear(); que.push(s); while (!que.empty()) { int v = que.front(); que.pop(); for (auto e : g[v]) { if (e.cap == 0 || level[e.to] >= 0) continue; level[e.to] = level[v] + 1; if (e.to == t) return; que.push(e.to); } } }; auto dfs = [&](auto self, int v, Cap up) { if (v == s) return up; Cap res = 0; int level_v = level[v]; for (int& i = iter[v]; i < int(g[v].size()); i++) { _edge& e = g[v][i]; if (level_v <= level[e.to] || g[e.to][e.rev].cap == 0) continue; Cap d = self(self, e.to, std::min(up - res, g[e.to][e.rev].cap)); if (d <= 0) continue; g[v][i].cap += d; g[e.to][e.rev].cap -= d; res += d; if (res == up) break; } return res; }; Cap flow = 0; while (flow < flow_limit) { bfs(); if (level[t] == -1) break; std::fill(iter.begin(), iter.end(), 0); while (flow < flow_limit) { Cap f = dfs(dfs, t, flow_limit - flow); if (!f) break; flow += f; } } return flow; } std::vector<bool> min_cut(int s) { std::vector<bool> visited(_n); internal::simple_queue<int> que; que.push(s); while (!que.empty()) { int p = que.front(); que.pop(); visited[p] = true; for (auto e : g[p]) { if (e.cap && !visited[e.to]) { visited[e.to] = true; que.push(e.to); } } } return visited; } private: int _n; struct _edge { int to, rev; Cap cap; }; std::vector<std::pair<int, int>> pos; std::vector<std::vector<_edge>> g; }; //} // namespace atcoder int main(){ auto start = duration_cast<milliseconds>(system_clock::now().time_since_epoch()).count(); ll N,A,B; cin>>N; //Dinic F(200002); //Dinic F; //cout<<"INF:"<<F.INF<<endl; mf_graph<ll> F(200010); for(int i=0;i<N;i++){ //cerr<<i<<endl; cin>>A>>B; A--;B--; /* F.add_edge(200000,i,1); F.add_edge(i,100000+A,1); if(A!=B)F.add_edge(i,100000+B,1); F.add_edge(100000+i,200001,1); */ F.add_edge(200000,i,1); F.add_edge(i,100000+A,1); if(A!=B)F.add_edge(i,100000+B,1); F.add_edge(100000+i,200001,1); } //cerr<<"edge added\n"; //ll cnt=F.max_flow(200000,200001); ll cnt=F.flow(200000,200001); //cout<<cnt<<endl; if(cnt!=N){ cout<<"No\n"; return 0; } //ここから構築 cout<<"Yes\n"; auto end= duration_cast<milliseconds>(system_clock::now().time_since_epoch()).count(); cerr<<end-start<<endl; return 0; }