#include "encoder.h"
#include "encoderlib.h"
#include <bits/stdc++.h>
using namespace std;
void encode(int n, int a[]){
for(int i = 0; i < n; i++){
int k = (i << 2);
int f1 = (a[i] >> 6) % 4;
int f2 = (a[i] >> 4) % 4;
int f3 = (a[i] >> 2) % 4;
int f4 = (a[i] >> 0) % 4;
send((k | f1 | (1 << 7)));
send((k | f2));
send((k | f3));
send((k | f3));
send((k | f4));
send((k | f4));
send((k | f4));
send((k | f4));
}
}
#include "decoder.h"
#include "decoderlib.h"
#include <bits/stdc++.h>
using namespace std;
void decode(int m, int n, int a[]){
vector < int > pos[m];
for(int i = 0; i < n; i++) pos[(a[i] >> 2) % 32].push_back(((a[i] % 4) | (a[i] & 128)));
for(int i = 0; i < m; i++){
int out = 0;
int cnt[4] = {};
for(int x : pos[i]){
if((x >> 7) & 1) out |= ((x % 4) << 6);
else cnt[x]++;
}
for(int x = 0; x < 4; x++){
if((cnt[x] & 1)) out |= (x << 4);
if((cnt[x] & 2)) out |= (x << 2);
if((cnt[x] & 4)) out |= (x << 0);
}
output(out);
}
}
