Submission #282380

#	Time	Username	Problem	Language	Result	Execution time	Memory
282380		SamAnd	Friend (IOI14_friend)	C++17	100 / 100	50 ms	3576 KiB

friend

#include "friend.h"
#include <bits/stdc++.h>
using namespace std;
const int N = 100005;

int v[N], cv[N];

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