Submission #498949

#	Time	Username	Problem	Language	Result	Execution time	Memory
498949		cadmiumsky	CONSUL (info1cup19_consul)	C++14	100 / 100	38 ms	200 KiB

consul

#include <random>
#include <unordered_map>
#include <chrono>
#include "grader.h"

using namespace std;

mt19937 rng(time(0));

void solve(int N) {
  if(N<=50) {
    unordered_map<int,int> freq;
    for(int i=1,x; i<=N; i++) {
      freq[x = kth(i)];
      freq[x]++;
    }
    for(auto x:freq) {
      if(x.second > N/3) {
        say_answer(x.first);
        return;
      }
      
    }
    say_answer(-1);
    return;
  }
  for(int i=0; i<30; i++) {
    int index=(rng()%N)+1;
    int val=kth(index);
    int freq=cnt(val);
    if(freq > N/3) {
      say_answer(val);
      return;
    }
  }
  say_answer(-1);
}

• Subtask 1: 15 / 15
• Subtask 2: 20 / 20
• Subtask 3: 65 / 65