//Franciszek Witt
#include<bits/stdc++.h>
using namespace std;
#define FOR(i,l,r) for(int i=(l);i<=(r);++i)
#define REP(i,n) FOR(i,0,(n)-1)
#define ssize(x) int(x.size())
template<class A,class B>auto&operator<<(ostream&o,pair<A,B>p){return o<<'('<<p.first<<", "<<p.second<<')';}
template<class T>auto operator<<(ostream&o,T x)->decltype(x.end(),o){o<<'{';int i=0;for(auto e:x)o<<(", ")+2*!i++<<e;return o<<'}';}
#ifdef DEBUG
#define debug(x...) cerr<<"["#x"]: ",[](auto...$){((cerr<<$<<"; "),...);}(x),cerr<<'\n'
#else
#define debug(...) {}
#endif
typedef long long ll;
int main() {
ios_base::sync_with_stdio(0);
cin.tie(0);
int n;
cin >> n;
vector zas(n + 1, 0LL);
vector tree(n + 1, vector<pair<int, ll>>());
FOR(i, 1, n)
cin >> zas[i];
REP(i, n - 1) {
int a, b;
ll c;
cin >> a >> b >> c;
tree[a].emplace_back(b, c);
tree[b].emplace_back(a, c);
}
vector<int> wyn(n + 1);
vector<int> bn(n + 1);
queue<int> qq;
int ti = 0;
int li = 0;
FOR(w, 1, n) {
++ti;
function<void(int, int, ll)> dfs = [&] (int x, int par, ll dist) {
if(dist < 0LL)
return;
if(bn[x] < ti) {
bn[x] = ti;
qq.push(x);
}
if(zas[x] >= dist && par != -1)
return;
for(auto [i, j] : tree[x])
if(i != par)
dfs(i, x, dist - j);
};
debug(w);
qq.push(w);
bn[w] = ti;
while(!qq.empty()) {
++wyn[w];
debug(qq.front());
dfs(qq.front(), -1, zas[qq.front()]);
qq.pop();
}
// cout << li << endl;
}
FOR(i, 1, n)
cout << wyn[i] << " ";
cout << endl;
}
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 | //Franciszek Witt #include<bits/stdc++.h> using namespace std; #define FOR(i,l,r) for(int i=(l);i<=(r);++i) #define REP(i,n) FOR(i,0,(n)-1) #define ssize(x) int(x.size()) template<class A,class B>auto&operator<<(ostream&o,pair<A,B>p){return o<<'('<<p.first<<", "<<p.second<<')';} template<class T>auto operator<<(ostream&o,T x)->decltype(x.end(),o){o<<'{';int i=0;for(auto e:x)o<<(", ")+2*!i++<<e;return o<<'}';} #ifdef DEBUG #define debug(x...) cerr<<"["#x"]: ",[](auto...$){((cerr<<$<<"; "),...);}(x),cerr<<'\n' #else #define debug(...) {} #endif typedef long long ll; int main() { ios_base::sync_with_stdio(0); cin.tie(0); int n; cin >> n; vector zas(n + 1, 0LL); vector tree(n + 1, vector<pair<int, ll>>()); FOR(i, 1, n) cin >> zas[i]; REP(i, n - 1) { int a, b; ll c; cin >> a >> b >> c; tree[a].emplace_back(b, c); tree[b].emplace_back(a, c); } vector<int> wyn(n + 1); vector<int> bn(n + 1); queue<int> qq; int ti = 0; int li = 0; FOR(w, 1, n) { ++ti; function<void(int, int, ll)> dfs = [&] (int x, int par, ll dist) { if(dist < 0LL) return; if(bn[x] < ti) { bn[x] = ti; qq.push(x); } if(zas[x] >= dist && par != -1) return; for(auto [i, j] : tree[x]) if(i != par) dfs(i, x, dist - j); }; debug(w); qq.push(w); bn[w] = ti; while(!qq.empty()) { ++wyn[w]; debug(qq.front()); dfs(qq.front(), -1, zas[qq.front()]); qq.pop(); } // cout << li << endl; } FOR(i, 1, n) cout << wyn[i] << " "; cout << endl; } |
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