#include <bits/stdc++.h>
#define ll long long
const int MAX_N = 1e5;
int n;
std::vector<std::pair<int, ll> > tree_list[MAX_N+3];
std::vector<int> list[MAX_N+3];
std::vector<int> t_list[MAX_N+3];
ll r[MAX_N+3];
void dfs1(int v, int f, int i, ll d) {
if (d > r[i]) return;
if (v != i) { list[i].push_back(v); t_list[v].push_back(i); }
for (auto p : tree_list[v])
if (p.first != f) dfs1(p.first, v, i, d + p.second);
}
bool visited[MAX_N+3];
std::stack<int> stack;
void dfs2(int v) {
visited[v] = true;
for (auto u : list[v]) if (!visited[u]) dfs2(u);
stack.push(v);
}
int scc_id[MAX_N+3];
std::vector<int> SCC[MAX_N+3];
void dfs3(int v, int D) {
visited[v] = true;
scc_id[v] = D; SCC[D].push_back(v);
for (auto u : t_list[v]) if (!visited[u]) dfs3(u, D);
}
std::vector<std::bitset<50000>> dp;
bool used[MAX_N+3];
int result[MAX_N+3];
void find_scc() {
for (int i = 1; i <= n; i++) visited[i] = false;
for (int i = 1; i <= n; i++) if (!visited[i]) dfs2(i);
int c = -1;
for (int i = 1; i <= n; i++) visited[i] = false;
while (!stack.empty()) {
int v = stack.top(); stack.pop();
if (!visited[v]) { c++; dfs3(v, c); };
}
dp.resize(c+3);
for (int i = 0; i <= c; i++) dp[i][i] = 1;
for (int i = c; i >= 0; i--) {
for (auto v : SCC[i]) {
for (auto u : list[v]) {
if (scc_id[u] != i && !used[scc_id[u]]) {
dp[i] |= dp[scc_id[u]];
used[scc_id[u]] = true;
}
}
}
for (auto v : SCC[i]) {
for (auto u : list[v]) {
used[scc_id[u]] = false;
}
}
}
for (int i = 0; i <= c; i++) {
result[i] = 0;
for (int j = 0; j <= c; j++) if (dp[i][j]) result[i] += SCC[j].size();
}
}
int main() {
std::ios_base::sync_with_stdio(0); std::cin.tie(NULL);
std::cin >> n;
for (int i = 1; i <= n; i++) std::cin >> r[i];
for (int i = 0; i < n-1; i++) {
int u, v; ll x; std::cin >> u >> v >> x;
tree_list[u].push_back({v, x});
tree_list[v].push_back({u, x});
}
for (int i = 1; i <= n; i++) dfs1(i, i, i, 0);
find_scc();
for (int i = 1; i <= n; i++) std::cout << result[scc_id[i]] << " ";
std::cout << "\n";
}
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 | #include <bits/stdc++.h> #define ll long long const int MAX_N = 1e5; int n; std::vector<std::pair<int, ll> > tree_list[MAX_N+3]; std::vector<int> list[MAX_N+3]; std::vector<int> t_list[MAX_N+3]; ll r[MAX_N+3]; void dfs1(int v, int f, int i, ll d) { if (d > r[i]) return; if (v != i) { list[i].push_back(v); t_list[v].push_back(i); } for (auto p : tree_list[v]) if (p.first != f) dfs1(p.first, v, i, d + p.second); } bool visited[MAX_N+3]; std::stack<int> stack; void dfs2(int v) { visited[v] = true; for (auto u : list[v]) if (!visited[u]) dfs2(u); stack.push(v); } int scc_id[MAX_N+3]; std::vector<int> SCC[MAX_N+3]; void dfs3(int v, int D) { visited[v] = true; scc_id[v] = D; SCC[D].push_back(v); for (auto u : t_list[v]) if (!visited[u]) dfs3(u, D); } std::vector<std::bitset<50000>> dp; bool used[MAX_N+3]; int result[MAX_N+3]; void find_scc() { for (int i = 1; i <= n; i++) visited[i] = false; for (int i = 1; i <= n; i++) if (!visited[i]) dfs2(i); int c = -1; for (int i = 1; i <= n; i++) visited[i] = false; while (!stack.empty()) { int v = stack.top(); stack.pop(); if (!visited[v]) { c++; dfs3(v, c); }; } dp.resize(c+3); for (int i = 0; i <= c; i++) dp[i][i] = 1; for (int i = c; i >= 0; i--) { for (auto v : SCC[i]) { for (auto u : list[v]) { if (scc_id[u] != i && !used[scc_id[u]]) { dp[i] |= dp[scc_id[u]]; used[scc_id[u]] = true; } } } for (auto v : SCC[i]) { for (auto u : list[v]) { used[scc_id[u]] = false; } } } for (int i = 0; i <= c; i++) { result[i] = 0; for (int j = 0; j <= c; j++) if (dp[i][j]) result[i] += SCC[j].size(); } } int main() { std::ios_base::sync_with_stdio(0); std::cin.tie(NULL); std::cin >> n; for (int i = 1; i <= n; i++) std::cin >> r[i]; for (int i = 0; i < n-1; i++) { int u, v; ll x; std::cin >> u >> v >> x; tree_list[u].push_back({v, x}); tree_list[v].push_back({u, x}); } for (int i = 1; i <= n; i++) dfs1(i, i, i, 0); find_scc(); for (int i = 1; i <= n; i++) std::cout << result[scc_id[i]] << " "; std::cout << "\n"; } |
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