Submission #1042720

#	Time	Username	Problem	Language	Result	Execution time	Memory
1042720		jer033	Friend (IOI14_friend)	C++17	58 / 100	15 ms	3428 KiB

friend

#include "friend.h"
#include <bits/stdc++.h>
using namespace std;

int findSample(int n,int confidence[],int host[],int protocol[]){
	vector<int> lb(n, 0);
    vector<int> ub(n, 0);
    for (int i=0; i<n; i++)
        ub[i] = confidence[i];
    for (int i=n-1; i>=1; i--)
    {
        int h = host[i];
        int p = protocol[i];
        if (p == 1)
        {
            lb[h] = lb[h]+lb[i];
            ub[h] = ub[h]+ub[i];
        }
        else if (p==2)
        {
            lb[h] = max(lb[h], lb[i]);
            ub[h] = max(ub[h], ub[i]);
        }
        else
        {
            lb[h] = lb[h] + ub[i];
            ub[h] = ub[h] + lb[i];
            ub[h] = max(ub[h], lb[h]);
        }
    }
    return max(lb[0], ub[0]);
}

• Subtask 1: 0 / 11
• Subtask 2: 8 / 8
• Subtask 3: 8 / 8
• Subtask 4: 19 / 19
• Subtask 5: 23 / 23
• Subtask 6: 0 / 31