結果
問題 | No.386 貪欲な領主 |
ユーザー | is_eri23 |
提出日時 | 2016-07-02 00:00:22 |
言語 | C++11 (gcc 11.4.0) |
結果 |
AC
|
実行時間 | 165 ms / 2,000 ms |
コード長 | 3,998 bytes |
コンパイル時間 | 1,467 ms |
コンパイル使用メモリ | 163,580 KB |
実行使用メモリ | 19,388 KB |
最終ジャッジ日時 | 2024-10-12 19:15:20 |
合計ジャッジ時間 | 3,240 ms |
ジャッジサーバーID (参考情報) |
judge3 / judge2 |
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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 | 4 ms
5,760 KB |
testcase_01 | AC | 4 ms
5,760 KB |
testcase_02 | AC | 4 ms
5,760 KB |
testcase_03 | AC | 3 ms
5,760 KB |
testcase_04 | AC | 165 ms
19,388 KB |
testcase_05 | AC | 121 ms
16,672 KB |
testcase_06 | AC | 120 ms
16,768 KB |
testcase_07 | AC | 4 ms
5,760 KB |
testcase_08 | AC | 19 ms
7,040 KB |
testcase_09 | AC | 5 ms
5,888 KB |
testcase_10 | AC | 4 ms
5,760 KB |
testcase_11 | AC | 3 ms
5,760 KB |
testcase_12 | AC | 4 ms
5,760 KB |
testcase_13 | AC | 7 ms
6,144 KB |
testcase_14 | AC | 124 ms
16,768 KB |
testcase_15 | AC | 140 ms
19,328 KB |
ソースコード
#include <bits/stdc++.h> #define EPS 1e-9 #define INF 1070000000LL #define MOD 1000000007LL #define fir first #define foreach(it,X) for(auto it=(X).begin();it!=(X).end();it++) #define numa(x,a) for(auto x: a) #define ite iterator #define mp make_pair #define rep(i,n) rep2(i,0,n) #define rep2(i,m,n) for(int i=m;i<(n);i++) #define pb push_back #define pf push_front #define sec second #define sz(x) ((int)(x).size()) #define ALL( c ) (c).begin(), (c).end() #define gcd(a,b) __gcd(a,b) #define mem(x,n) memset(x,n,sizeof(x)) #define endl "\n" using namespace std; template <int POS, class TUPLE> void deploy(std::ostream &os, const TUPLE &tuple){} template <int POS, class TUPLE, class H, class ...Ts> void deploy(std::ostream &os, const TUPLE &t){ os << (POS == 0 ? "" : ", ") << get<POS>(t); deploy<POS + 1, TUPLE, Ts...>(os, t); } template <class T,class U> std::ostream& operator<<(std::ostream &os, std::pair<T,U> &p){ os << "(" << p.first <<", " << p.second <<")";return os; } template <class T> std::ostream& operator<<(std::ostream &os, std::vector<T> &v){ int remain = v.size(); os << "{"; for(auto e: v) os << e << (--remain == 0 ? "}" : ", "); return os; } template <class T> std::ostream& operator<<(std::ostream &os, std::set<T> &v){ int remain = v.size(); os << "{"; for(auto e: v) os << e << (--remain == 0 ? "}" : ", "); return os; } template <class T, class K> std::ostream& operator<<(std::ostream &os, std::map<T, K> &mp){ int remain = mp.size(); os << "{"; for(auto e: mp) os << "(" << e.first << " -> " << e.second << ")" << (--remain == 0 ? "}" : ", "); return os; } #define DEBUG1(var0) { std::cerr << (#var0) << "=" << (var0) << endl; } #define DEBUG2(var0, var1) { std::cerr << (#var0) << "=" << (var0) << ", ";DEBUG1(var1); } #define DEBUG3(var0, var1, var2) { std::cerr << (#var0) << "=" << (var0) << ", ";DEBUG2(var1,var2); } #define DEBUG4(var0, var1, var2, var3) { std::cerr << (#var0) << "=" << (var0) << ", ";DEBUG3(var1,var2,var3); } using ll = long long; int U[100100]; template <int MAX_V = 100100, int MAX_LOG_V = 18> class LCA{ int root; vector <int> edge[MAX_V]; int parent[MAX_LOG_V][MAX_V]; int depth[MAX_V]; int cost[MAX_V]; int V; public: LCA(){ root = 0; V = MAX_V; } inline void dfs(int v,int p,int d){ parent[0][v] = p; depth[v] = d; for(int i = 0;i < sz(edge[v]);i++){ if(edge[v][i] != p){ dfs(edge[v][i],v,d+1); } } } inline void add_edge(int x,int y) { edge[x].pb(y); edge[y].pb(x); } inline void init(int root_, int V_){ root = root_; V = V_; //parent[0]とrootを初期化 dfs(root,-1,0); //parentを初期化する for(int k = 0;k+1<MAX_LOG_V;k++){ for(int v = 0; v < V;v++){ if(parent[k][v] < 0){ parent[k+1][v] = -1; }else{ parent[k+1][v] = parent[k][parent[k][v]]; } } } dfs2(root); } inline int query(int u,int v){ if(depth[u] > depth[v]){ swap(u,v); } for(int k = 0; k < MAX_LOG_V;k++){ if((depth[v]-depth[u]) >> k & 1){ v = parent[k][v]; } } if(u == v){ return u; } for(int k = MAX_LOG_V-1;k >= 0;k--){ if(parent[k][u] != parent[k][v]){ u = parent[k][u]; v = parent[k][v]; } } return parent[0][u]; } void dfs2(int v, int par = -1, int c = 0){ int nc = c + U[v]; cost[v] = nc; numa(x, edge[v]){ if (x == par) continue; dfs2(x, v, nc); } } ll solve(int u, int v){ int par = query(u,v); return cost[u] + cost[v] - cost[par] * 2 + U[par]; } }; LCA<100010, 17> lca; int main() { cin.tie(0); ios_base::sync_with_stdio(0); int N; cin >> N; rep(i,N-1){ int u,v; cin >> u >> v; lca.add_edge(u, v); } rep(i,N){ cin >> U[i]; } lca.init(0, N); int M; cin >> M; ll ans = 0; rep(i,M){ int u,v,c; cin >> u >> v >> c; ans += lca.solve(u, v) * c; } cout << ans << endl; return 0; }