Submission #1117190

#	Time	Username	Problem	Language	Result	Execution time	Memory
1117190		ortsac	Parrots (IOI11_parrots)	C++17	81 / 100	4 ms	1640 KiB

encoder

#include "encoder.h"
#include "encoderlib.h"
#include <bits/stdc++.h>

using namespace std;

void encode(int n, int v[]) {
  vector<bool> on(512);
  int val = -1;
  for (int i = 0; i < n; i++) {
    for (int j = 7; j >= 0; j--) {
      val++;
      if (v[i] & (1 << j)) on[val] = 1;
    }
  }
  for (int i = 0; i < 256; i++) {
    if (on[i]) send(i);
    if (on[i + 256]) {
      send(i);
      send(i);
    }
  }
}

decoder

#include "decoder.h"
#include "decoderlib.h"
#include <bits/stdc++.h>

using namespace std;

void decode(int n, int l, int x[]) {
  vector<int> qtd(256);
  for (int i = 0; i < l; i++) qtd[x[i]]++;
  vector<bool> tem(512);
  for (int i = 0; i < 256; i++) {
    if ((qtd[i] == 1) || (qtd[i] == 3)) tem[i] = 1;
    else if ((qtd[i] == 2) || (qtd[i] == 3)) tem[i + 256] = 1; 
  }
  int val = -1;
  for (int i = 0; i < n; i++) {
    int curr = 0;
    for (int j = 7; j >= 0; j--) {
      val++;
      if (tem[val]) curr += (1 << j);
    }
    output(curr);
  }
}

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