Submission #102781

#	Time	Username	Problem	Language	Result	Execution time	Memory
102781		wxh010910	Friend (IOI14_friend)	C++17	100 / 100	42 ms	3448 KiB

friend

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

using namespace std;

int findSample(int n, int confidence[], int host[], int protocol[]) {
  vector<int> foo(confidence, confidence + n), bar(n, 0);
  for (int i = n - 1; i; --i) {
    int j = host[i];
    if (protocol[i] == 0) {
      foo[j] += bar[i];
      bar[j] += max(foo[i], bar[i]);
    } else if (protocol[i] == 1) {
      foo[j] = max(foo[j] + max(foo[i], bar[i]), bar[j] + foo[i]);
      bar[j] += bar[i];
    } else {
      foo[j] = max(foo[j] + bar[i], bar[j] + foo[i]);
      bar[j] += bar[i];
    }
  }
  return max(foo[0], bar[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