제출 #865046

#	제출 시각UTC-0	아이디	문제	언어	결과	실행 시간	메모리
865046	2023-10-24 03:51:05	LittleOrange	Designated Cities (JOI19_designated_cities)	C++17	13 / 100	198 ms	43344 KiB

designated_cities

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#include<bits/stdc++.h>
using namespace std;
using ll = long long;
struct obj{
    ll to,c0,c1;// to, back
};
int main(){
    ios::sync_with_stdio(0);cin.tie(0);
    ll n,q;
    cin >> n;
    vector<vector<obj>> con(n);
    ll tot = 0;
    for(ll i = 1;i<n;i++){
        ll a,b,c,d;
        cin >> a >> b >> c >> d;a--;b--;
        con[a].push_back({b,c,d});
        con[b].push_back({a,d,c});
        tot += c+d;
    }
    ll leaf_cnt = 0;
    for(auto &o : con) if (o.size()==1) leaf_cnt++;
    cin >> q;
    if (n<=16){
        vector<ll> ans(n+1,tot);
        ll cur = tot;
        vector<vector<ll>> used(n,vector<ll>(n,0));
        function<void(ll,ll)> dfs;
        dfs = [&](ll i, ll p){
            for(obj l : con[i]){
                if (l.to!=p){
 
 
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• Subtask 2: 7 / 7
• Subtask 3: 0 / 9
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• Subtask 6: 0 / 44