#include "transfer.h"
#include <bits/stdc++.h>
using namespace std;
// avoir le full de 2 problèmes sans pouvoir les coder...
int N = 255;
vector<int> get_attachment(vector<int> source) {
vector<int> res;
int parite = 0;
int position = 0;
for (int i = 1; i <= N; i++) {
if (source[i-1] == 1) {
position ^= i;
parite ^= 1;
}
}
vector<int> binaire(8, 0);
while (position != 0) {
binaire[0]++;
int idx = 0;
while (binaire[idx] > 1) {
binaire[idx] = 0;
binaire[idx+1]++;
idx++;
}
position--;
}
binaire.push_back(parite);
return binaire;
}
vector<int> retrieve(vector<int> data) {
int parite = 0;
int position = 0;
for (int i = N; i < N+8; i++) {
if (data[i] == 1) {
position += (1 << i-N);
}
}
for (int i = 1; i <= N; i++) {
if (data[i-1] == 1) {
parite ^= 1;
position ^= i;
}
}
// vector<int> fz(data.begin(), data.begin()+N);
// for (int i : fz) cerr << i << ' ';
// cerr << '\n';
// cerr << position << '\n';
if (position == 0 || parite == data[N+8]) return vector<int>(data.begin(), data.begin()+N);
data[position-1] ^= 1;
vector<int> dd(data.begin(), data.begin()+N);
// for (int i : dd) cerr << i << ' ';
// cerr << '\n';
return vector<int>(data.begin(), data.begin()+N);
}
