#include "encoder.h"
#include "encoderlib.h"
#include <bits/stdc++.h>
using namespace std;
void encode(int N, int M[]) {
vector<int> go;
int cnt = 0;
for(int i = 0; i < N; ++i) {
for(int j = 0; j < 4; ++j) {
int B = (M[i] >> (6 - 2 * j));
B &= 3;
cnt += B;
}
}
if(N * 2 * 3 <= cnt) {
for(int i = 0; i < 4; ++i) send(0);
for(int i = 0; i < N; ++i) {
for(int j = 0; j < 4; ++j) {
int B = (M[i] >> (6 - 2 * j));
B &= 3;
B = 3 - B;
while(B--) send(j + (i << 2));
}
}
return;
}
for(int i = 0; i < N; ++i) {
for(int j = 0; j < 4; ++j) {
int B = (M[i] >> (6 - 2 * j));
B &= 3;
while(B--) send(j + (i << 2));
}
}
}
#include "decoder.h"
#include "decoderlib.h"
#include <bits/stdc++.h>
using namespace std;
void decode(int N, int L, int X[]) {
bool rev = 0;
sort(X, X + L);
if(L >= 4 && X[3] == 0) {
rev = 1;
}
vector<array<int, 4>> cnt(N, {0, 0, 0, 0});
for(int i = (rev ? 4 : 0); i < L; ++i) {
++cnt[(X[i] >> 2)][(X[i] & 3)];
}
if(rev)
for(int i = 0; i < N; ++i) {
for(int j = 0; j < 4; ++j) cnt[i][j] = 3 - cnt[i][j];
}
vector<int> ans;
for(int i = 0; i < N; ++i) {
for(int j = 0; j < 4; ++j)
ans[i] ^= (cnt[i][j] << (6 - 2 * j));
}
for(int i = 0; i < N; ++i) {
output(ans[i]);
}
}
