# |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
630165 |
2022-08-15T19:26:38 Z |
Hacv16 |
Sjekira (COCI20_sjekira) |
C++17 |
|
79 ms |
54412 KB |
#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef pair<int, int> pii;
const int MAX = 2e6 + 15;
const int INF = 0x3f3f3f3f;
const int MOD = 1e9 + 7;
#define pb push_back
#define sz(x) (int) x.size()
#define fr first
#define sc second
#define mp make_pair
#define all(x) x.begin(), x.end()
#define dbg(x) cerr << #x << ": " << "[ " << x << " ]\n"
ll n, t[MAX], pai[MAX], mx[MAX], sze[MAX], ans;
vector<int> adj[MAX];
ll find(ll u){
if(pai[u] == u) return u;
return pai[u] = find(pai[u]);
}
void join(ll u, ll v){
u = find(u), v = find(v);
if(u == v) return;
if(sze[v] > sze[u]) swap(u, v);
pai[v] = u, sze[u] += sze[v], mx[u] = max(mx[u], mx[v]);
}
ll getMax(ll u){
return mx[find(u)];
}
bool cmp(int u, int v){
return t[u] < t[v];
}
int main(){
ios_base::sync_with_stdio(false);
cin.tie(NULL);
cin >> n;
for(int i = 1; i <= n; i++)
cin >> t[i];
for(int i = 1; i < n; i++){
int u, v; cin >> u >> v;
adj[u].pb(v); adj[v].pb(u);
}
for(int i = 1; i <= n; i++)
sort(all(adj[i]), cmp); //not slow since tree
for(int i = 1; i <= n; i++)
pai[i] = i, mx[i] = t[i], sze[i] = 1;
vector<int> order(n);
iota(all(order), 1);
sort(all(order), cmp);
for(auto u : order){
for(auto v : adj[u]){
if(find(u) != find(v)){
ans += getMax(u);
ans += getMax(v);
join(u, v);
}
}
}
cout << ans << '\n';
return 0;
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Incorrect |
22 ms |
47248 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Incorrect |
79 ms |
54412 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Incorrect |
22 ms |
47248 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Incorrect |
22 ms |
47248 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |