#include <bits/stdc++.h> #include <random> #define ll long long int #define pb push_back #define st first #define nd second #define pii pair<int,int> #define mp make_pair #define pll pair<long long,long long> #define ld long double #define ull unsigned long long #define mt make_tuple using namespace std; const int nax = 6666; const ll inf = 2e18; bitset<nax> somsiady[nax]; vector<pll> adj[nax]; int n; ll r[nax]; void bfs(int v){ vector<ll> dist(n + 1, inf); dist[v] = 0; vector<int> Q; Q.pb(v); int wsk = 0; while(wsk < (int)Q.size()){ int cur = Q[wsk++]; for(pll go : adj[cur]){ if(dist[go.st] == inf){ dist[go.st] = dist[cur] + go.nd; Q.pb(go.st); } } } for(int i=1;i<=n;i++){ if(dist[i] <= r[v]) somsiady[v][i] = true; } } void resolve(int v){ bitset<nax> reachable = somsiady[v]; bitset<nax> used; while(reachable.count() > used.count()){ int g = (reachable ^ used)._Find_first(); reachable |= somsiady[g]; used[g] = true; } cout << reachable.count() << " "; } void solve(){ cin >> n; for(int i=1;i<=n;i++) cin >> r[i]; for(int i=1;i<n;i++){ ll x, y, z; cin >> x >> y >> z; adj[x].pb(mp(y, z)); adj[y].pb(mp(x, z)); } for(int i=1;i<=n;i++) bfs(i); for(int i=1;i<=n;i++){ resolve(i); } cout << "\n"; } int main(){ ios_base::sync_with_stdio(0); cin.tie(0); int tt = 1; // cin >> tt; while(tt--) solve(); return 0; }
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 | #include <bits/stdc++.h> #include <random> #define ll long long int #define pb push_back #define st first #define nd second #define pii pair<int,int> #define mp make_pair #define pll pair<long long,long long> #define ld long double #define ull unsigned long long #define mt make_tuple using namespace std; const int nax = 6666; const ll inf = 2e18; bitset<nax> somsiady[nax]; vector<pll> adj[nax]; int n; ll r[nax]; void bfs(int v){ vector<ll> dist(n + 1, inf); dist[v] = 0; vector<int> Q; Q.pb(v); int wsk = 0; while(wsk < (int)Q.size()){ int cur = Q[wsk++]; for(pll go : adj[cur]){ if(dist[go.st] == inf){ dist[go.st] = dist[cur] + go.nd; Q.pb(go.st); } } } for(int i=1;i<=n;i++){ if(dist[i] <= r[v]) somsiady[v][i] = true; } } void resolve(int v){ bitset<nax> reachable = somsiady[v]; bitset<nax> used; while(reachable.count() > used.count()){ int g = (reachable ^ used)._Find_first(); reachable |= somsiady[g]; used[g] = true; } cout << reachable.count() << " "; } void solve(){ cin >> n; for(int i=1;i<=n;i++) cin >> r[i]; for(int i=1;i<n;i++){ ll x, y, z; cin >> x >> y >> z; adj[x].pb(mp(y, z)); adj[y].pb(mp(x, z)); } for(int i=1;i<=n;i++) bfs(i); for(int i=1;i<=n;i++){ resolve(i); } cout << "\n"; } int main(){ ios_base::sync_with_stdio(0); cin.tie(0); int tt = 1; // cin >> tt; while(tt--) solve(); return 0; } |