Submission #73911

#	Time	Username	Problem	Language	Result	Execution time	Memory
73911		funcsr	Friend (IOI14_friend)	C++17	100 / 100	59 ms	1672 KiB

friend

#include "friend.h"
#include <vector>
#define rep(i, n) for (int i=0; i<(n); i++)
#define pb push_back
using namespace std;

int findSample(int N, int A[], int host[], int protocol[]) {
  int cost = 0;
  for (int x=N-1; x>0; x--) {
    int p = host[x];
    if (protocol[x] == 0) cost += A[x], A[p] = max(0, A[p]-A[x]);
    else if (protocol[x] == 1) A[p] += A[x];
    else A[p] = max(A[p], A[x]);
  }
  return cost + A[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