Submission #1024504

#	Time	Username	Problem	Language	Result	Execution time	Memory
1024504		vjudge1	Friend (IOI14_friend)	C++17	100 / 100	18 ms	4188 KiB

friend

#include "friend.h"
#include<bits/stdc++.h>
using namespace std;
long long p[100100],q[100100];
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;--i;){
        int H=host[i];
        if(!protocol[i])p[H]+=q[i],
            q[H]+=max(q[i],p[i]);
        else if(protocol[i]==1)
            p[H]=max({p[H]+p[i],p[H]+q[i],q[H]+p[i]}),
            q[H]+=q[i];
        else p[H]=max(p[H]+q[i],p[i]+q[H]),q[H]+=q[i];
        p[i]=q[i]=0;
    }
	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