제출 #1183119

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1183119		burgerguy	Friend (IOI14_friend)	C++20	35 / 100	0 ms	328 KiB

friend

#include <bits/stdc++.h>
#include "friend.h"

using namespace std;
using ll = long long;

int findSample(int n, int conf[], int host[], int p[]) {
    vector<ll> choose(n), notChoose(n);

    for (int i = 0; i < n; ++i) {
        choose[i] = conf[i];
        notChoose[i] = 0;
    }

    for (int i = n - 1; i > 0; --i) {
        ll hostNode = host[i];
        ll newNode = i;

        if(p[i] == 0) {
            choose[hostNode] = choose[hostNode] + notChoose[newNode];
            notChoose[hostNode] = max(notChoose[hostNode] + choose[newNode], notChoose[hostNode] + notChoose[newNode]);
        }
        else if(p[i] == 1) {
            choose[hostNode] = max(max(choose[hostNode] + notChoose[newNode], notChoose[hostNode] + choose[newNode]), choose[hostNode] + choose[newNode]);
            notChoose[hostNode] = notChoose[hostNode] + choose[newNode];
        }
        else {
            choose[hostNode] = max(choose[hostNode] + notChoose[newNode], notChoose[hostNode] + choose[newNode]);
            notChoose[hostNode] = notChoose[hostNode] + notChoose[newNode];
        }
    }

    return max(choose[0], notChoose[0]);
}

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