Submission #594822

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
594822	2022-07-13 01:06:46	czhang2718	Magic Tree (CEOI19_magictree)	C++17	100 / 100	140 ms	37868 KiB

magictree

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#include "bits/stdc++.h"
using namespace std;
typedef long long ll;
const int N=1e5;
int n, m, k;
int par[N];
int d[N], w[N];
map<int,ll> mp[N];
int main(){
    cin.tie(0)->sync_with_stdio(0);
    cin >> n >> m >> k;
    for(int i=1; i<n; i++){
        cin >> par[i]; --par[i];
    }
    for(int i=0; i<m; i++){
        int v; cin >> v;
        v--;
        cin >> d[v] >> w[v];
    }
    auto join=[&](int i, int j){
        if(mp[i].size()>mp[j].size()) swap(mp[i], mp[j]);
        for(auto p:mp[i]){
            mp[j][p.first]+=p.second;
        }
    };
 
 
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