Submission #565205

#	Time	Username	Problem	Language	Result	Execution time	Memory
565205		Dodo	Question (Grader is different from the original contest) (CEOI14_question_grader)	C++14	60 / 100	3046 ms	24200 KiB

encoder

#include <bits/stdc++.h>
#define ll long long
#define endl '\n'
#define pb push_back
using namespace std;


int encode(int n, int x, int y)
{
  for(int i=0;i<=9;i++)
  {
    if((x&(1<<i))^(y&(1<<i)))
    {
      if((x&(1<<i)))
        return i+1;
    }
  }

  x=__builtin_popcount(x);
  y=__builtin_popcount(y);

  for(int i=0;i<=4;i++)
  {
    if((x&(1<<i))^(y&(1<<i)))
    {
      if((y&(1<<i)))
        return (11+i);
    }
  }
}

decoder

#include <bits/stdc++.h>
#define ll long long
#define endl '\n'
#define pb push_back
using namespace std;

int decode (int n, int q, int h)
{
  if(h<=10)
  {
    h-=1;
    if((q&(1<<h)))return 1;
    else return 0;
  }
  else
  {
    ll x=__builtin_popcount(q);
    h-=11;
    if((x&(1<<h)))return 0;
    else return 1;
  }
}

Compilation message (stderr)

encoder.cpp: In function 'int encode(int, int, int)':
encoder.cpp:30:1: warning: control reaches end of non-void function [-Wreturn-type]
   30 | }
      | ^

• Subtask 1: 60 / 100