Submission #1125046

#	Time	Username	Problem	Language	Result	Execution time	Memory
1125046		epicci23	Friend (IOI14_friend)	C++20	100 / 100	22 ms	2116 KiB

friend

#include "bits/stdc++.h"
using namespace std;
#include "friend.h"

int findSample(int n,int confidence[],int host[],int protocol[]){
  array<int,2> val[n+5];
  
  for(int i=0;i<n;i++){
  	val[i][1] = confidence[i];
  	val[i][0] = 0;
  }

  for(int i=n-1;i>=1;i--){
  	int p = host[i];
  	int op = protocol[i];
    if(op == 0){
     val[p][0] += max(val[i][0], val[i][1]);
     val[p][1] += val[i][0];
    }
    else if(op == 1){
     val[p][1] = max({val[p][1]+val[i][0],val[p][1]+val[i][1],val[p][0]+val[i][1]});
     val[p][0] += val[i][0];
    }
    else{
      val[p][1] = max(val[p][1]+val[i][0],val[p][0]+val[i][1]);
      val[p][0] += val[i][0];
    }
  }

  return max(val[0][0],val[0][1]);
}

• Subtask 1: 11 / 11
• Subtask 2: 8 / 8
• Subtask 3: 8 / 8
• Subtask 4: 19 / 19
• Subtask 5: 23 / 23
• Subtask 6: 31 / 31