#include "message.h"
// #include "grader.cpp"
#include <bits/stdc++.h>
using namespace std;
#define NL '\n'
#define EL cout << NL
#define FOR(i,n) for (long long i = 0; i < (n); i++)
#define FORS(i,s,n) for (long long i = (s); i < (n); i++)
#define FORR(i,n) for (long long i = (n)-1; i >= 0; i--)
#define PRINTV(v) for (auto a:v) {cout << a << " ";} EL;
#define PRINTVV(v) for (auto a:v) {PRINTV(a);}
#define f first
#define s second
#define all(v) (v).begin(),(v).end()
typedef long long ll;
typedef vector<ll> vl;
typedef vector<bool> vb;
typedef vector<vl> vvl;
typedef pair<ll,ll> pl;
typedef vector<pl> vpl;
typedef vector<vpl> vvpl;
ll packets = 68;
ll msize = 41;
ll checksize = 23;
vector<vb> check = {{0,1,1,1,0,0,0,0,0,0,0,1,1,0,1,1,1,0,1,1,1,1,1},{1,1,1,1,1,1,0,0,0,0,0,1,1,1,1,1,0,0,0,1,0,0,1},{1,0,0,0,0,0,1,1,0,1,0,1,0,0,0,1,1,1,1,0,1,1,1},{1,1,0,0,1,0,0,0,0,1,0,0,0,1,0,1,0,1,0,0,0,0,0},{0,1,0,1,1,1,0,1,0,0,0,1,1,0,1,0,0,1,0,0,0,1,0},{0,0,1,0,0,0,1,1,0,1,1,1,1,1,1,0,0,0,0,1,0,1,0},{0,0,1,0,0,0,0,1,1,1,0,0,0,1,1,0,1,1,0,1,1,0,0},{1,0,1,1,1,0,1,1,1,1,1,1,1,1,1,0,0,1,0,1,0,1,1},{0,0,0,0,0,1,1,0,0,0,1,0,1,1,1,1,1,1,1,1,1,1,1},{0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,1,0,1,0,0,1,1},{1,0,1,0,0,1,1,1,1,1,1,0,1,0,1,1,0,0,0,0,1,1,1},{1,1,1,1,1,0,1,0,0,0,0,1,1,1,0,0,1,1,0,0,1,0,1},{0,0,1,1,0,1,1,1,0,1,0,0,0,1,0,1,0,0,0,0,1,1,0},{1,0,1,0,0,0,0,1,0,1,0,1,1,1,0,0,1,0,1,0,1,1,0},{1,0,1,0,1,0,1,1,0,1,0,1,0,0,0,1,0,1,0,1,1,0,1},{1,1,1,1,0,0,1,1,0,1,1,0,0,1,0,1,1,1,0,1,1,1,1},{0,1,0,1,0,1,0,1,1,1,0,1,1,1,1,0,0,0,1,0,1,0,1},{0,1,0,0,0,0,0,1,1,1,1,0,1,0,0,1,0,0,0,0,1,1,1},{0,1,1,0,1,1,1,1,0,0,1,1,1,0,0,0,1,0,1,0,0,0,0},{1,0,1,0,1,1,1,1,0,1,1,1,0,0,1,1,0,1,1,1,0,1,0},{1,1,0,0,0,0,1,1,0,0,0,0,1,0,0,0,0,0,0,1,1,0,0},{0,1,1,0,1,1,0,0,1,1,0,1,1,1,1,0,1,0,0,0,0,1,1},{1,1,0,0,0,1,0,1,0,1,1,0,1,1,1,1,1,1,1,1,1,1,0},{1,0,0,1,1,1,0,1,0,1,0,0,1,1,0,1,0,1,1,0,1,1,0},{0,0,0,1,0,0,0,1,1,0,0,1,1,0,1,0,0,0,1,1,0,0,0},{0,0,1,1,1,1,1,0,1,1,0,1,0,0,0,0,0,0,0,0,0,0,1},{1,1,1,0,0,1,1,1,1,1,1,0,1,1,0,0,0,1,0,1,0,1,1},{0,0,1,0,0,1,0,0,1,0,0,1,1,0,1,1,1,1,0,1,1,0,1},{1,1,0,0,1,1,0,0,0,0,1,1,1,1,0,0,1,1,0,1,0,0,0},{1,0,1,1,1,1,0,0,0,1,1,0,0,0,0,0,0,1,1,0,1,1,1},{1,0,1,0,0,0,0,1,1,1,1,0,1,0,0,1,0,0,0,0,1,1,0}};
void send_message(std::vector<bool> m, std::vector<bool> c) {
reverse(all(m));
ll x = 0;
FOR(i,31) {
if (!c[i] && !c[(i+1)%31]) {
x = i;
}
}
// ll x2 = x;
// FOR(b,5) {
// vb p(31,x2%2);
// send_packet(p);
// x2 /= 2;
// }
vl meta;
reverse(all(c));
for (auto x: c) meta.push_back(x);
ll n = m.size()-1;
FOR(b,10) {
meta.push_back(n%2);
n /= 2;
}
reverse(all(c));
ll t = 0;
vb ch = check[x];
while ((!m.empty()) || (!meta.empty()) || (t < packets)) {
vb p(31);
bool freemeta = false;
if (meta.empty()) freemeta = true;
else {
p[x] = meta.back();
meta.pop_back();
}
FOR(b,31) {
if (b == x && !freemeta) continue;
if (b == x && t >= packets-checksize) {
p[x] = ch.back();
ch.pop_back();
continue;
}
if (c[b]) continue;
if (m.empty()) continue;
p[b] = m.back();
m.pop_back();
}
send_packet(p);
t++;
}
}
std::vector<bool> receive_message(std::vector<std::vector<bool>> r) {
reverse(all(r));
ll x = -1;
FOR(i,31) {
// FOR(j,68) cout << r[j][i] << " ";
// cout << endl;
bool ok = true;
FOR(y,checksize) {
if (r[y][i] != check[i][y]) {
ok = false;
break;
}
}
if (ok) {
// assert(x == -1);
x = i;
}
}
// assert(x != -1);
ll pw = 512;
ll n = 1;
set<ll> goodbits;
ll ind = 0;
ll freemeta = -1;
ll t = 0;
vl c(31);
FORR(i,(ll)r.size()) {
vb p = r[i];
if (pw != 0) {
ll b = p[x];
n += pw*b;
if (pw > 1) pw /= 2;
else pw = 0;
} else if (ind < 31) {
ll b = p[x];
c[ind] = b;
if (!b && ind != x) goodbits.insert(ind);
ind++;
} else {
freemeta = t;
break;
}
t++;
}
if (freemeta == -1) freemeta = t;
vb message;
t = 0;
while ((ll)message.size() < n) {
vb p = r.back();
r.pop_back();
if (freemeta == t) {
goodbits.insert(x);
}
// for (auto b: goodbits) {
FOR(b,31) {
if (b == x && t < freemeta) continue;
if (b == x && t >= packets-checksize) continue;
if (c[b]) continue;
if ((ll)message.size() < n) {
message.push_back(p[b]);
}
}
t++;
}
return message;
}
