Submission #244050

#	Time	Username	Problem	Language	Result	Execution time	Memory
244050		apostoldaniel854	Friend (IOI14_friend)	C++14	100 / 100	43 ms	3448 KiB

friend

#include <bits/stdc++.h>
#include "friend.h"

using namespace std;

using ll = long long;
#define pb push_back
#define dbg(x) cerr << #x << " " << x << "\n"


/**

**/

const int N = 1e5;
int c[1 + N], d[1 + N];

int findSample (int n, int confidence[], int host[], int protocol[]) {
    for (int i = 0; i < n; i++) {
        c[i] = confidence[i];
        d[i] = 0;
    }
    for (int i = n - 1; i > 0; i--) {
        if (protocol[i] == 0) {
            c[host[i]] += d[i];
            d[host[i]] += max (c[i], d[i]);
        }
        if (protocol[i] == 1) {
            c[host[i]] = max (c[host[i]] + c[i], max(c[host[i]] + d[i], d[host[i]] + c[i]));
            d[host[i]] += d[i];
        }
        if (protocol[i] == 2) {
            c[host[i]] = max(c[host[i]] + d[i], d[host[i]] + c[i]);
            d[host[i]] += d[i];
        }
    }
    return max (c[0], d[0]);
}
/**
int main () {
    return 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