Submission #237070

#	Time	Username	Problem	Language	Result	Execution time	Memory
237070		crossing0ver	Friend (IOI14_friend)	C++17	100 / 100	37 ms	2936 KiB

friend

#include<bits/stdc++.h>
#include "friend.h"
using namespace std;
const int MAXN = 1E5+5;
int val[MAXN];
int findSample(int n,int confidence[],int host[],int protocol[]){
	int ans = 0;
	for (int i =0; i < n; i++) val[i] = confidence[i];
	for (int i = n; i > 0; i--) {
		int v = host[i];
		int t = protocol[i];
		if (t == 1) {
			val[v] += val[i];
		}
		else if (t == 2) {
			val[v] = max(val[v],val[i]);
		}
		else {
			ans += val[i];
			val[v] = max (0,val[v] - val[i]);
		}
	}
	return val[0] + ans;
}

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