Submission #864103

#	Time	Username	Problem	Language	Result	Execution time	Memory
864103		Ice_man	Truck Driver (IOI23_deliveries)	C++17	0 / 100	68 ms	11140 KiB

deliveries

#include <iostream>
#include <vector>
#include <deliveries.h>

#define maxn 100005
#define maxq 300005
#define INF 1000000010
#define endl '\n'

using namespace std;

long long n;

long long t[maxn];
long long c[maxn];

vector <pair <int , int> > v[maxn];
long long ans;

long long pom;

void dfs(long long node , long long parent = -1)
{
    c[node] = t[node];

    for(long long i = 0; i < (long long)v[node].size(); i++)
    {
        if(v[node][i].first == parent) continue;
        dfs(v[node][i].first , node);

        ans += v[node][i].second * min(c[v[node][i].first] , pom - c[v[node][i].first]);
        c[node] += c[v[node][i].first];
    }

}

void init(int N, vector<int> U, vector<int> V, vector<int> T, vector<int> W)
{

    n = N;
    for(long long i = 0; i < (long long)U.size(); i++) v[U[i]].push_back({V[i] , W[i]});
    for(long long i = 0; i < (long long)V.size(); i++) v[V[i]].push_back({U[i] , W[i]});

    for(long long i = 0; i < n; i++) pom += t[i];



    for(long long i = 0; i < n; i++) t[i] = T[i];
}



long long max_time(int S , int X)
{
    pom -= t[S];

    t[S] = X;
    pom += t[S];
    ans = 0;

    dfs(0);
    return ans;

}

• Subtask 1: 0 / 8
• Subtask 2: 0 / 21
• Subtask 3: 0 / 14
• Subtask 4: 0 / 21
• Subtask 5: 0 / 36