제출 #528197

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
528197		Leo121	Traffic (IOI10_traffic)	C++14	0 / 100	15 ms	23804 KiB

traffic

#include "traffic.h"
#include <bits/stdc++.h>
#define forn(i, a, b) for(int i = int(a); i <= int(b); ++i)
#define pb push_back
using namespace std;
typedef long long ll;
typedef pair<int, int> pii;
typedef vector<int> vi;
const int lim = 1e6;
vi graph[lim];
int pesos[lim];
bool visitados[lim];
ll mayor = LLONG_MAX, res = 0;
ll trafico(int u){
    ll suma = 0;
    for(int v : graph[u]){
        if(!visitados[v]){
            visitados[v] = 1;
            suma += trafico(v);
        }
    }
    return suma + (ll) pesos[u];
}
int LocateCentre(int N, int pp[], int S[], int D[]) {
    forn(i, 0, N - 1){
        pesos[i] = pp[i];
    }
    forn(i, 0, N - 2){
        graph[S[i]].pb(D[i]);
        graph[D[i]].pb(S[i]);
    }
    ll aux;
    forn(i, 0, N - 1){
        forn(j, 0, N - 1){
            visitados[j] = 0;
        }
        visitados[i] = 1;
        aux = LLONG_MIN;
        for(int j : graph[i]){
            aux = max(aux, trafico(j));
        }
        if(mayor >= aux){
            mayor = aux;
            res = i;
        }
    }
    return res;
}

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