Submission #162098

#	Time	Username	Problem	Language	Result	Execution time	Memory
162098		oolimry	Friend (IOI14_friend)	C++14	100 / 100	91 ms	3064 KiB

friend

#include "friend.h"
#include <bits/stdc++.h>
using namespace std;
int notake[100005];
int findSample(int n, int take[], int host[], int protocol[]) {
	for(int v = n-1;v >= 1;v--){
		int u = host[v];
		if(protocol[v] == 0){ //I Am Your Friend
			take[u] += notake[v];
			notake[u] += max(take[v],notake[v]);
		}
		else if(protocol[v] == 1){ //My Friends Are Your Friends
			take[u] = max(take[u]+take[v],max(take[u]+notake[v],notake[u]+take[v]));
			notake[u] += notake[v];
		}
		else{
			take[u] = max(take[u]+notake[v],notake[u]+take[v]);
			notake[u] += notake[v];
		}
	}
	return max(take[0],notake[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