Submission #418306

#	Time	Username	Problem	Language	Result	Execution time	Memory
418306		Bill_00	Friend (IOI14_friend)	C++14	100 / 100	31 ms	3140 KiB

friend

#include "friend.h"
#include <bits/stdc++.h>
using namespace std;
// Find out best sample
int p[1000005],q[1000005];
int findSample(int n,int confidence[],int host[],int protocol[]){
	for(int i=0;i<n;i++){
		p[i]=confidence[i];
	}
	for(int i=n-1;i>=1;i--){
		if(protocol[i]==0){
			p[host[i]]=p[host[i]]+q[i];
			q[host[i]]=q[host[i]]+max(q[i],p[i]);
		}
		if(protocol[i]==1){
			p[host[i]]=max(max(p[host[i]]+q[i],p[i]+q[host[i]]),p[host[i]]+p[i]);
			q[host[i]]=q[i]+q[host[i]];
		}
		if(protocol[i]==2){
			p[host[i]]=max(p[host[i]]+q[i],q[host[i]]+p[i]);
			q[host[i]]=q[i]+q[host[i]];
		}
	}
	return max(p[0],q[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