結果
問題 | No.912 赤黒木 |
ユーザー | Sumitacchan |
提出日時 | 2019-10-28 20:48:26 |
言語 | C++14 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 434 ms / 3,000 ms |
コード長 | 3,902 bytes |
コンパイル時間 | 2,077 ms |
コンパイル使用メモリ | 179,896 KB |
実行使用メモリ | 70,912 KB |
最終ジャッジ日時 | 2024-09-14 21:18:05 |
合計ジャッジ時間 | 13,272 ms |
ジャッジサーバーID (参考情報) |
judge1 / judge3 |
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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
5,248 KB |
testcase_01 | AC | 2 ms
5,376 KB |
testcase_02 | AC | 3 ms
5,376 KB |
testcase_03 | AC | 3 ms
5,376 KB |
testcase_04 | AC | 2 ms
5,376 KB |
testcase_05 | AC | 3 ms
5,376 KB |
testcase_06 | AC | 2 ms
5,376 KB |
testcase_07 | AC | 2 ms
5,376 KB |
testcase_08 | AC | 2 ms
5,376 KB |
testcase_09 | AC | 2 ms
5,376 KB |
testcase_10 | AC | 2 ms
5,376 KB |
testcase_11 | AC | 3 ms
5,376 KB |
testcase_12 | AC | 342 ms
50,944 KB |
testcase_13 | AC | 349 ms
52,480 KB |
testcase_14 | AC | 328 ms
49,408 KB |
testcase_15 | AC | 354 ms
52,608 KB |
testcase_16 | AC | 341 ms
50,816 KB |
testcase_17 | AC | 349 ms
51,328 KB |
testcase_18 | AC | 343 ms
49,664 KB |
testcase_19 | AC | 350 ms
48,640 KB |
testcase_20 | AC | 347 ms
48,128 KB |
testcase_21 | AC | 331 ms
47,872 KB |
testcase_22 | AC | 269 ms
48,360 KB |
testcase_23 | AC | 269 ms
48,504 KB |
testcase_24 | AC | 270 ms
48,504 KB |
testcase_25 | AC | 366 ms
50,944 KB |
testcase_26 | AC | 380 ms
52,480 KB |
testcase_27 | AC | 361 ms
50,304 KB |
testcase_28 | AC | 434 ms
70,912 KB |
testcase_29 | AC | 425 ms
70,656 KB |
testcase_30 | AC | 407 ms
69,592 KB |
testcase_31 | AC | 369 ms
65,620 KB |
ソースコード
#include <bits/stdc++.h> using namespace std; /*#include <ext/pb_ds/assoc_container.hpp> #include <ext/pb_ds/tree_policy.hpp> using namespace __gnu_pbds; template<typename T> using gpp_set = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>; template<typename T, typename L> using gpp_map = tree<T, L, less<T>, rb_tree_tag, tree_order_statistics_node_update>; template<typename T> using gpp_multiset = tree<T, null_type, less_equal<T>, rb_tree_tag, tree_order_statistics_node_update>;*/ struct fast_ios { fast_ios(){ cin.tie(0); ios::sync_with_stdio(false); cout << fixed << setprecision(20); }; } fast_ios_; #define FOR(i, begin, end) for(int i=(begin);i<(end);i++) #define REP(i, n) FOR(i,0,n) #define IFOR(i, begin, end) for(int i=(end)-1;i>=(begin);i--) #define IREP(i, n) IFOR(i,0,n) #define Sort(v) sort(v.begin(), v.end()) #define Reverse(v) reverse(v.begin(), v.end()) #define all(v) v.begin(),v.end() #define SZ(v) ((int)v.size()) #define Lower_bound(v, x) distance(v.begin(), lower_bound(v.begin(), v.end(), x)) #define Upper_bound(v, x) distance(v.begin(), upper_bound(v.begin(), v.end(), x)) #define Max(a, b) a = max(a, b) #define Min(a, b) a = min(a, b) #define bit(n) (1LL<<(n)) #define bit_exist(x, n) ((x >> n) & 1) #define debug(x) cout << #x << "=" << x << endl; #define vdebug(v) cout << #v << "=" << endl; REP(i_debug, v.size()){ cout << v[i_debug] << ","; } cout << endl; #define mdebug(m) cout << #m << "=" << endl; REP(i_debug, m.size()){ REP(j_debug, m[i_debug].size()){ cout << m[i_debug][j_debug] << ","; } cout << endl;} #define pb push_back #define f first #define s second #define int long long #define INF 1000000000000000000 template<typename T> istream &operator>>(istream &is, vector<T> &v){ for (auto &x : v) is >> x; return is; } template<typename T> ostream &operator<<(ostream &os, vector<T> &v){ for(int i = 0; i < v.size(); i++) { cout << v[i]; if(i != v.size() - 1) cout << endl; }; return os; } template<typename T> void Out(T x) { cout << x << endl; } template<typename T1, typename T2> void Ans(bool f, T1 y, T2 n) { if(f) Out(y); else Out(n); } using vec = vector<int>; using mat = vector<vec>; using Pii = pair<int, int>; using PiP = pair<int, Pii>; using PPi = pair<Pii, int>; using bools = vector<bool>; using pairs = vector<Pii>; //int dx[4] = {1,0,-1,0}; //int dy[4] = {0,1,0,-1}; //char d[4] = {'D','R','U','L'}; const int mod = 1000000007; //const int mod = 998244353; //#define Add(x, y) x = (x + (y)) % mod //#define Mult(x, y) x = (x * (y)) % mod struct edge{int to, cost, id;}; class Graph { public: int N; vector<vector<edge>> G; Graph(int N): N(N){ G = vector<vector<edge>>(N, vector<edge>(0)); } void add_Directed_edge(int from, int to, int cost = 1, int id = 0){ G[from].push_back(edge({to, cost, id})); } void add_Undirected_edge(int v1, int v2, int cost = 1, int id = 0){ add_Directed_edge(v1, v2, cost, id); add_Directed_edge(v2, v1, cost, id); } vec cnt; mat dp; void dfs(int v = 0, int p = -1){ REP(i, cnt[v] + 1) dp[v][i] = 0; for(auto e: G[v]) if(e.to != p){ dfs(e.to, v); vec dp0(3, INF); REP(i, min(2LL, cnt[v]) + 1) REP(j, min(2LL, cnt[e.to]) + 1){ if(i + j <= 2) Min(dp0[i + j], dp[v][i] + dp[e.to][j] + (cnt[e.to] - j) % 2); } cnt[v] += cnt[e.to]; dp[v].swap(dp0); } } }; signed main(){ int N; cin >> N; Graph R(N), B(N); REP(i, N - 1){ int a, b; cin >> a >> b; R.add_Undirected_edge(a - 1, b - 1); } REP(i, N - 1){ int a, b; cin >> a >> b; B.add_Undirected_edge(a - 1, b - 1); } vec cnt(N); REP(i, N) cnt[i] = SZ(B.G[i]) % 2; R.cnt = cnt; R.dp = mat(N, vec(3, INF)); R.dfs(); Out(R.dp[0][2] + N - 1); return 0; }