結果
問題 | No.1442 I-wate Shortest Path Problem |
ユーザー | first_vil |
提出日時 | 2021-01-28 20:12:02 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
WA
|
実行時間 | - |
コード長 | 4,839 bytes |
コンパイル時間 | 2,837 ms |
コンパイル使用メモリ | 224,228 KB |
実行使用メモリ | 28,500 KB |
最終ジャッジ日時 | 2024-10-11 12:20:31 |
合計ジャッジ時間 | 8,628 ms |
ジャッジサーバーID (参考情報) |
judge3 / judge4 |
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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 | WA | - |
testcase_01 | WA | - |
testcase_02 | WA | - |
testcase_03 | WA | - |
testcase_04 | WA | - |
testcase_05 | WA | - |
testcase_06 | WA | - |
testcase_07 | WA | - |
testcase_08 | WA | - |
testcase_09 | WA | - |
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 | AC | 134 ms
20,960 KB |
testcase_23 | WA | - |
testcase_24 | AC | 104 ms
18,320 KB |
testcase_25 | WA | - |
testcase_26 | WA | - |
ソースコード
#include <bits/stdc++.h> using namespace std; using ll = long long; using ld = long double; using VI = vector<int>; using VL = vector<ll>; using VS = vector<string>; template<class T> using PQ = priority_queue<T, vector<T>, greater<T>>; #define FOR(i,a,n) for(int i=(a);i<(n);++i) #define eFOR(i,a,n) for(int i=(a);i<=(n);++i) #define rFOR(i,a,n) for(int i=(n)-1;i>=(a);--i) #define erFOR(i,a,n) for(int i=(n);i>=(a);--i) #define SORT(a) sort(a.begin(),a.end()) #define rSORT(a) sort(a.rbegin(),a.rend()) #define fSORT(a,f) sort(a.begin(),a.end(),f) #define all(a) a.begin(),a.end() #define out(y,x) ((y)<0||h<=(y)||(x)<0||w<=(x)) #define tp(a,i) get<i>(a) #ifdef _DEBUG #define line cout << "-----------------------------\n" #define stop system("pause") #define debug(x) print(x) #endif constexpr ll INF = 1000000000; constexpr ll LLINF = 1LL << 60; constexpr ll mod = 1000000007; constexpr ll MOD = 998244353; constexpr ld eps = 1e-10; constexpr ld pi = 3.1415926535897932; template<class T>inline bool chmax(T& a, const T& b) { if (a < b) { a = b; return true; }return false; } template<class T>inline bool chmin(T& a, const T& b) { if (a > b) { a = b; return true; }return false; } inline void init() { cin.tie(nullptr); cout.tie(nullptr); ios::sync_with_stdio(false); cout << fixed << setprecision(15); } template<class T>inline istream& operator>>(istream& is, vector<T>& v) { for (auto& a : v)is >> a; return is; } template<class T, class U>inline istream& operator>>(istream& is, pair<T, U>& p) { is >> p.first >> p.second; return is; } template<class T>inline vector<T> vec(size_t a) { return vector<T>(a); } template<class T>inline vector<T> defvec(T def, size_t a) { return vector<T>(a, def); } template<class T, class... Ts>inline auto vec(size_t a, Ts... ts) { return vector<decltype(vec<T>(ts...))>(a, vec<T>(ts...)); } template<class T, class... Ts>inline auto defvec(T def, size_t a, Ts... ts) { return vector<decltype(defvec<T>(def, ts...))>(a, defvec<T>(def, ts...)); } template<class T>inline void print(const T& a) { cout << a << "\n"; } template<class T, class... Ts>inline void print(const T& a, const Ts&... ts) { cout << a << " "; print(ts...); } template<class T>inline void print(const vector<T>& v) { for (int i = 0; i < v.size(); ++i)cout << v[i] << (i == v.size() - 1 ? "\n" : " "); } template<class T>inline void print(const vector<vector<T>>& v) { for (auto& a : v)print(a); } inline string reversed(const string& s) { string t = s; reverse(all(t)); return t; } template<class T>inline T sum(const vector<T>& a, int l, int r) { return a[r] - (l == 0 ? 0 : a[l - 1]); } template<class T>inline void END(T s) { print(s); exit(0); } void END() { exit(0); } int main() { init(); int n, k; cin >> n >> k; vector<vector<pair<int, int>>> g(n + k); FOR(i, 0, n - 1) { int a, b, c; cin >> a >> b >> c; --a, --b; g[a].emplace_back(b, c); g[b].emplace_back(a, c); } const int logn = log2(n); VI dep(n); VL dis(n, LLINF); auto nxt = defvec<int>(-1, logn + 1, n); auto dfs = [&](auto&& f, int cur, int par, int cur_dep, ll cur_dis)->void { dep[cur] = cur_dep; dis[cur] = cur_dis; nxt[0][cur] = par; for (auto [to, cost] : g[cur]) { if (to == par)continue; f(f, to, cur, cur_dep + 1, cur_dis + cost); } }; dfs(dfs, 0, -1, 0, 0); FOR(j, 0, logn)FOR(i, 0, n)if (nxt[j][i] != -1) nxt[j + 1][i] = nxt[j][nxt[j][i]]; auto lca = [&](int a, int b)->int { if (dis[a] > dis[b])swap(a, b); int d = dep[b] - dep[a]; eFOR(j, 0, logn)if (d & (1 << j))b = nxt[j][b]; if (a == b)return a; erFOR(j, 0, logn)if (nxt[j][a] != nxt[j][b]) { a = nxt[j][a], b = nxt[j][b]; } return nxt[0][a]; }; auto dist = [&](int u, int v) { return dis[u] + dis[v] - dis[lca(u, v)] * 2; }; VI p(k); FOR(i, 0, k) { int m; cin >> m >> p[i]; FOR(j, 0, m) { int x; cin >> x; --x; g[n + i].emplace_back(x, 0); g[x].emplace_back(n + i, p[i]); } } auto dp = defvec<ll>(LLINF, k, n + k); PQ<pair<ll, int>> dik; FOR(i, 0, k) { dp[i][n + i] = 0; dik.emplace(0, n + i); while (!dik.empty()) { auto [d, cur] = dik.top(); dik.pop(); if (dp[i][cur] < d)continue; for (auto [to, cost] : g[cur]) { if (!chmin(dp[i][to], d + cost))continue; dik.emplace(d + cost, to); } } } int q; cin >> q; while (q--) { int u, v; cin >> u >> v; --u, --v; ll ans = dist(u, v); //FOR(i, 0, k)chmin(ans, dp[i][u] + dp[i][v] + p[i]); print(ans); } return 0; }