結果
問題 | No.1640 簡単な色塗り |
ユーザー | 🍮かんプリン |
提出日時 | 2021-08-07 22:58:39 |
言語 | C++14 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 380 ms / 2,000 ms |
コード長 | 4,046 bytes |
コンパイル時間 | 2,120 ms |
コンパイル使用メモリ | 188,792 KB |
実行使用メモリ | 57,412 KB |
最終ジャッジ日時 | 2024-06-29 17:01:00 |
合計ジャッジ時間 | 18,320 ms |
ジャッジサーバーID (参考情報) |
judge4 / 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 | 2 ms
6,812 KB |
testcase_01 | AC | 2 ms
6,944 KB |
testcase_02 | AC | 2 ms
6,940 KB |
testcase_03 | AC | 2 ms
6,940 KB |
testcase_04 | AC | 224 ms
45,564 KB |
testcase_05 | AC | 234 ms
47,168 KB |
testcase_06 | AC | 2 ms
6,940 KB |
testcase_07 | AC | 2 ms
6,940 KB |
testcase_08 | AC | 1 ms
6,944 KB |
testcase_09 | AC | 1 ms
6,940 KB |
testcase_10 | AC | 184 ms
29,632 KB |
testcase_11 | AC | 144 ms
24,852 KB |
testcase_12 | AC | 127 ms
22,392 KB |
testcase_13 | AC | 318 ms
43,608 KB |
testcase_14 | AC | 309 ms
43,372 KB |
testcase_15 | AC | 97 ms
17,280 KB |
testcase_16 | AC | 108 ms
20,224 KB |
testcase_17 | AC | 253 ms
36,664 KB |
testcase_18 | AC | 22 ms
6,940 KB |
testcase_19 | AC | 125 ms
22,260 KB |
testcase_20 | AC | 173 ms
28,816 KB |
testcase_21 | AC | 144 ms
24,068 KB |
testcase_22 | AC | 15 ms
6,944 KB |
testcase_23 | AC | 194 ms
30,752 KB |
testcase_24 | AC | 50 ms
11,004 KB |
testcase_25 | AC | 124 ms
22,632 KB |
testcase_26 | AC | 212 ms
33,656 KB |
testcase_27 | AC | 88 ms
16,512 KB |
testcase_28 | AC | 290 ms
41,536 KB |
testcase_29 | AC | 220 ms
33,396 KB |
testcase_30 | AC | 24 ms
9,728 KB |
testcase_31 | AC | 237 ms
51,572 KB |
testcase_32 | AC | 186 ms
43,108 KB |
testcase_33 | AC | 107 ms
30,308 KB |
testcase_34 | AC | 166 ms
40,748 KB |
testcase_35 | AC | 108 ms
28,744 KB |
testcase_36 | AC | 25 ms
9,984 KB |
testcase_37 | AC | 35 ms
13,184 KB |
testcase_38 | AC | 218 ms
42,116 KB |
testcase_39 | AC | 67 ms
21,516 KB |
testcase_40 | AC | 70 ms
19,596 KB |
testcase_41 | AC | 150 ms
35,060 KB |
testcase_42 | AC | 74 ms
22,204 KB |
testcase_43 | AC | 82 ms
27,392 KB |
testcase_44 | AC | 77 ms
24,440 KB |
testcase_45 | AC | 57 ms
19,960 KB |
testcase_46 | AC | 28 ms
10,368 KB |
testcase_47 | AC | 18 ms
8,448 KB |
testcase_48 | AC | 210 ms
48,860 KB |
testcase_49 | AC | 8 ms
6,940 KB |
testcase_50 | AC | 2 ms
6,940 KB |
testcase_51 | AC | 2 ms
6,944 KB |
testcase_52 | AC | 380 ms
54,892 KB |
testcase_53 | AC | 369 ms
57,412 KB |
07_evil_01.txt | AC | 940 ms
93,648 KB |
07_evil_02.txt | AC | 1,580 ms
139,500 KB |
ソースコード
/** * @FileName a.cpp * @Author kanpurin * @Created 2021.08.07 22:58:36 **/ #include "bits/stdc++.h" using namespace std; typedef long long ll; struct StronglyConnectedComponents { private: vector<vector<int>> g, rg; vector<int> order; vector<bool> visited; int V; void dfs(int v) { if (visited[v]) return; visited[v] = true; for (int u : g[v]) dfs(u); order.push_back(v); } void rdfs(int v, int c) { if (comp[v] != -1) return; comp[v] = c; for (int u : rg[v]) rdfs(u, c); } public: vector<vector<int>> Graph; vector<int> comp; StronglyConnectedComponents(int v) : V(v) { g.resize(v); rg.resize(v); visited.resize(v); comp.resize(v); } void add_vertex(int n = 1) { V += n; g.resize(V); rg.resize(V); visited.resize(V); comp.resize(V); } void add_edge(int from, int to) { g[from].push_back(to); rg[to].push_back(from); } void build() { Graph = vector<vector<int>>(); order = vector<int>(); visited.assign(V, false); comp.assign(V, -1); for (int i = 0; i < V; i++) dfs(i); reverse(order.begin(), order.end()); int number = 0; for (int i = 0; i < V; i++) { if (comp[order[i]] == -1) { rdfs(order[i], number++); } } Graph.resize(number); for (int i = 0; i < V; i++) { for (int v : g[i]) { if (comp[i] == comp[v]) continue; Graph[comp[i]].push_back(comp[v]); } } } }; struct TwoSAT { private: int _n; std::vector<bool> _answer; StronglyConnectedComponents scc; void only_one_naive(const vector<int> &x, const vector<bool> &t) { assert(x.size() == t.size()); int _m = x.size(); for (int i = 0; i < _m-1; i++) { for (int j = i+1; j < _m; j++) { add_clause(x[i],!t[i],x[j],!t[j]); } } } public: TwoSAT():_n(0),scc(0){} explicit TwoSAT(int n) : _n(n), _answer(n), scc(2*n) {} void add_clause(int i, bool f, int j, bool g) { assert(0 <= i && i < _n); assert(0 <= j && j < _n); scc.add_edge(2 * i + (f ? 0 : 1), 2 * j + (g ? 1 : 0)); scc.add_edge(2 * j + (g ? 0 : 1), 2 * i + (f ? 1 : 0)); } void only_one(const vector<int> &x, const vector<bool> &t) { assert(x.size() == t.size()); int _m = x.size(); if (_m <= 12) { only_one_naive(x,t); return; } int _nn = _n; _n += _m; scc.add_vertex(_m*2); _answer.resize(_n); for (int i = 0; i < _m; i++) { add_clause(_nn+i,false,x[i],!t[i]); } for (int i = 1; i < _m; i++) { add_clause(_nn+i,false,_nn+i-1,true); add_clause(x[i],!t[i],_nn+i-1,true); } } bool satisfiable() { scc.build(); auto id = scc.comp; for (int i = 0; i < _n; i++) { if (id[2 * i] == id[2 * i + 1]) return false; _answer[i] = id[2 * i] < id[2 * i + 1]; } return true; } std::vector<bool> answer() { return _answer; } }; int main() { int n;cin >> n; TwoSAT ts(n); vector<int> a(n),b(n); vector<vector<int>> x(n); vector<vector<bool>> t(n); for (int i = 0; i < n; i++) { cin >> a[i] >> b[i]; x[a[i]-1].push_back(i); x[b[i]-1].push_back(i); t[a[i]-1].push_back(true); t[b[i]-1].push_back(false); } for (int i = 0; i < n; i++) { ts.only_one(x[i],t[i]); } if (!ts.satisfiable()) { puts("No"); } else { puts("Yes"); auto ans = ts.answer(); for (int i = 0; i < n; i++) { cout << (ans[i]?a[i]:b[i]) << endl; } } return 0; }