#include "encoder.h"
#include "encoderlib.h"
int r[4] = { 1,2,4,8 };
void encode(int N, int M[]){
if (N <= 32) {
for (int i = 0; i < N; i++) {
int a = M[i] >> 4;
int b = M[i] & (0xf);
send(((i * 2) << 2) + (a >> 2));
send(((i * 2) << 2) + (a >> 2));
send(((i * 2) << 2) + (a & 3));
send(((i * 2 + 1) << 2) + (b >> 2));
send(((i * 2 + 1) << 2) + (b >> 2));
send(((i * 2 + 1) << 2) + (b & 3));
}
}
else {
for (int i = 0; i < N; i++) {
for (int j = 0; j < 4; j++) {
for (int k = 0; k < r[j]; k++) {
send((i << 2) + (M[i] & 3));
}
M[i] >>= 2;
}
}
}
}
#include "decoder.h"
#include "decoderlib.h"
void decode(int N, int L, int X[]){
if (N <= 32) {
int ans[32] = { 0, }, cnt[64][4] = { 0, };
for (int i = 0; i < L; i++)
cnt[X[i] >> 2][X[i] & 3]++;
for (int i = 0; i < 64; i++) {
for (int j = 0; j < 4; j++) {
if (cnt[i][j] == 1) {
ans[i / 2] |= i & 1 ? j : j << 4;
}
else if (cnt[i][j] == 2) {
ans[i / 2] |= i & 1 ? j << 2 : j << 6;
}
else if (cnt[i][j] == 3) {
ans[i / 2] |= i & 1 ? (j * 4 + j) : (j * 4 + j) << 4;
}
}
}
for (int i = 0; i < N; i++) {
output(ans[i]);
}
}
else {
int ans[64] = { 0, }, cnt[64][4] = { 0, };
for (int i = 0; i < L; i++)
cnt[X[i] >> 2][X[i] & 3]++;
for (int i = 0; i < 64; i++) {
for (int j = 0; j < 4; j++) {
for(int k=0;k<4;k++) {
if (cnt[i][j] & 1) ans[i] |= j << (k*2);
cnt[i][j] /= 2;
}
}
}
for (int i = 0; i < N; i++)
output(ans[i]);
}
}
