Submission #776297

#	Time	Username	Problem	Language	Result	Execution time	Memory
776297		ThegeekKnight16	Friend (IOI14_friend)	C++17	100 / 100	21 ms	3460 KiB

friend

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

// Find out best sample
int findSample(int n,int confidence[],int host[],int protocol[]){
	vector<array<int, 2>> dp(n);
	for (int i = 0; i < n; i++) dp[i][0] = 0, dp[i][1] = confidence[i];
	for (int i = n-1; i > 0; i--)
	{
		int pai = host[i]; int type = protocol[i];
		if (type == 0)
		{
			dp[pai][1] = dp[pai][1] + dp[i][0];
			dp[pai][0] = dp[pai][0] + max(dp[i][0], dp[i][1]);
		}
		else if (type == 1)
		{
			dp[pai][1] = max({dp[pai][1] + dp[i][1], dp[pai][1] + dp[i][0], dp[pai][0] + dp[i][1]});
			dp[pai][0] = dp[pai][0] + dp[i][0];
		}
		else
		{
			dp[pai][1] = max(dp[pai][1] + dp[i][0], dp[pai][0] + dp[i][1]);
			dp[pai][0] = dp[pai][0] + dp[i][0];
		}
	}
	return max(dp[0][1], dp[0][0]);
}

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