Submission #136147

#	Time	Username	Problem	Language	Result	Execution time	Memory
136147		arthurconmy	Friend (IOI14_friend)	C++14	0 / 100	2 ms	376 KiB

friend

#include <bits/stdc++.h>
#ifndef ARTHUR_LOCAL
	#include "friend.h"
#endif
using namespace std;

const int MAXN=1000;
int C[MAXN];
int H[MAXN];
int P[MAXN];

vector<int> adj[MAXN];
int ans[2][MAXN];
bool vis[MAXN];

void dfs(int v)
{
	vis[v]=1;

	for(auto u:adj[v])
	{
		if(vis[u]) continue;

		dfs(u);
		ans[0][v] += ans[1][v];
		ans[1][v] += ans[0][v];
	}

	ans[1][v] = max(C[v]+ans[0][v],ans[1][v]);
}

int findSample(int n, int C_raw[], int H_raw[], int P_raw[])
{
	for(int i=0; i<n; i++)
	{
		C[i]=C_raw[i];
		H[i]=H_raw[i];
		P[i]=P_raw[i];
	}

	for(int i=1; i<n; i++)
	{
		adj[i].push_back(H[i]);
		adj[H[i]].push_back(i);
	}

	dfs(0);

	return max(ans[0][0], ans[0][1]);
}

• Subtask 1: 0 / 11
• Subtask 2: 0 / 8
• Subtask 3: 0 / 8
• Subtask 4: 0 / 19
• Subtask 5: 0 / 23
• Subtask 6: 0 / 31