Submission #1033160

#	Time	Username	Problem	Language	Result	Execution time	Memory
1033160		aymanrs	Parrots (IOI11_parrots)	C++14	81 / 100	3 ms	1348 KiB

encoder

#include "encoder.h"
#include "encoderlib.h"

void encode(int N, int M[])
{
  for(int i = 0;i < N;i++){
    send(i*8+(M[i]&3));
    send(i*8+(M[i]&3));
    send(i*8+(M[i]>>2&3));
    send(i*8+4+(M[i]>>4&3));
    send(i*8+4+(M[i]>>4&3));
    send(i*8+4+(M[i]>>6&3));
  }
}

decoder

#include "decoder.h"
#include "decoderlib.h"
#include <vector>
#include <algorithm>
static std::pair<int, int> gh(int a, int b, int c){
  int f = a^b^c;
  if(f==a) return {b^(b&4),f^(f&4)};
  return {a^(a&4),f^(f&4)};
}
void decode(int N, int L, int X[])
{
  std::vector<int> a[N];
  for(int i=0; i<L; i++) {
    a[X[i]>>3].push_back(X[i]&7);
  }
  for(int i = 0;i < N;i++){
    std::sort(a[i].begin(), a[i].end());
    auto vl = gh(a[i][0], a[i][1], a[i][2]), vr = gh(a[i][3],a[i][4],a[i][5]);
    output(vl.first+4*vl.second+16*vr.first+64*vr.second);
  }
}

• Subtask 1: 17 / 17
• Subtask 2: 17 / 17
• Subtask 3: 18 / 18
• Subtask 4: 29 / 29
• Subtask 5: 0 / 19