Submission #1019019

#	Time	Username	Problem	Language	Result	Execution time	Memory
1019019		SonicML	Friend (IOI14_friend)	C++14	100 / 100	17 ms	3436 KiB

friend

#include <iostream>
#include <fstream>
#include "friend.h"

using namespace std;

int const NMAX = 1e5;
int ans[2][1 + NMAX];

int findSample(int n, int confidence[], int host[], int protocol[]) {
  for(int i = 0;i < n;i++) {
    ans[1][i] = confidence[i];
    ans[0][i] = 0;
  }
  for(int i = n-1;i > 0;i--) {
    int temp0, temp1;
    if(protocol[i] == 0) {
      temp0 = max(ans[0][host[i]] + ans[0][i], ans[0][host[i]] + ans[1][i]);
      temp1 = ans[1][host[i]] + ans[0][i];
    }else if(protocol[i] == 1) {
      temp0 = ans[0][host[i]] + ans[0][i];
      temp1 = max(ans[1][host[i]] + ans[1][i], max(ans[1][host[i]] + ans[0][i], ans[0][host[i]] + ans[1][i]));
    }else {
      temp0 = ans[0][host[i]] + ans[0][i];
      temp1 = max(ans[1][host[i]] + ans[0][i], ans[0][host[i]] + ans[1][i]);
    }
    ans[0][host[i]] = temp0;
    ans[1][host[i]] = temp1;
  }
  return max(ans[0][0], ans[1][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