제출 #848549

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
848549		toma_ariciu	Traffic (IOI10_traffic)	C++17	0 / 100	6 ms	30040 KiB

traffic

#include <vector>

using namespace std;

const int maxN = 1000005;
int n, sz[maxN], bestDiff, bestCity, total;
vector <int> G[maxN];

void dfs(int nod, int tata) {
    int currDiff = 0;
    for (int vecin : G[nod]) {
        if (vecin == tata) {
            continue;
        }
        dfs(vecin, nod);
        sz[nod] += sz[vecin];
        currDiff = max(currDiff, sz[vecin]);
    }
    currDiff = max(currDiff, total - sz[nod]);
    if (currDiff < bestDiff) {
        bestDiff = currDiff;
        bestCity = nod;
    }
}

int LocateCentre(int N, int P[], int S[], int D[]) {
    n = N;
    for (int i = 0; i < n; i++) {
        sz[i] += P[i];
        total += P[i];
    }
    bestDiff = 2 * maxN;
    for (int i = 0; i < n - 1; i++) {
        G[S[i]].push_back(D[i]);
        G[D[i]].push_back(S[i]);
    }
    dfs(0, 0);
    return bestCity;
}

• Subtask 1: 0 / 25
• Subtask 2: 0 / 25
• Subtask 3: 0 / 25
• Subtask 4: 0 / 25