Submission #874279

#	Time	Username	Problem	Language	Result	Execution time	Memory
874279		YongXin	Friend (IOI14_friend)	C++14	100 / 100	22 ms	1840 KiB

friend

#include "friend.h"
#include <bits/stdc++.h>
using namespace std;
int no[100000];
int findSample(int n,int confidence[],int host[],int protocol[]){
    ios_base::sync_with_stdio(false);cin.tie(NULL);
    for(int i=n-1;i>0;--i){
        switch(protocol[i]){
            case 0:
                confidence[host[i]]+=no[i];
                no[host[i]]+=max(confidence[i],no[i]);
                break;
            case 1:
                confidence[host[i]]=max(confidence[host[i]]+confidence[i],max(confidence[host[i]]+no[i],no[host[i]]+confidence[i]));
                no[host[i]]+=no[i];
                break;
            case 2:
                confidence[host[i]]=max(confidence[host[i]]+no[i],no[host[i]]+confidence[i]);
                no[host[i]]+=no[i];
        }
    }
    return max(confidence[0],no[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