#include "bits/stdc++.h"
#define pb push_back
#include "message.h"
using namespace std;
#define ll long long
void send_message(vector<bool> M, vector<bool> C) {
int N = M.size();
vector<bool> A(31, 0), B(31, 1);
vector<int> cnt(2), zind;
int ind = 0;
while(ind < 31){
if(cnt[0] == 0){
if(C[ind] == 0) send_packet(A);
else send_packet(B);
cnt[C[ind]]++;
if(C[ind] == 0) zind.pb(ind);
ind++;
}
else{
vector<bool> pac(31, 0);
int oldind = ind;
for(auto itr: zind){
if(ind > 30) break;
pac[itr] = C[ind++];
}
for(int j = oldind; j < ind; j++){
if(C[j] == 0) zind.pb(j);
}
send_packet(pac);
}
}
vector<bool> dis_packet = A;
int bt = 1;
for(int j = 0; j < 31; j++){
if(C[j] == 0){
if(bt & N) dis_packet[j] = 1;
bt *= 2;
}
}
send_packet(dis_packet);
for(int i = 0; i < N; i += 16){
vector<bool> packet = A;
int ind = 0;
for(int j = 0; j < 31; j++){
if(C[j] == 1) continue;
if(i + ind < N) packet[j] = M[i + ind];
ind++;
}
send_packet(packet);
}
}
vector<bool> receive_message(vector<vector<bool>> R){
int n = R.size();
vector<int> C(31);
vector<int> cnt(2), zind;
int ind = 0, mind = 0;
while(ind < 31){
if(cnt[0] == 0){
int sum = 0;
for(int j = 0; j < 31; j++){
sum += R[mind][j];
}
if(sum >= 16) C[ind] = 1;
else C[ind] = 0;
cnt[C[ind]]++;
if(C[ind] == 0) zind.pb(ind);
ind++;
mind++;
}
else{
int oldind = ind;
for(int j = 0; j < oldind; j++){
if(C[j] == 0){
if(ind > 30) break;
C[ind] = R[mind][j];
ind++;
}
}
for(int j = oldind; j < ind; j++){
if(C[j] == 0) zind.pb(j);
}
mind++;
}
}
int len = 0, bt = 1;
for(int i = mind; i <= mind; i++){
for(int j = 0; j < 31; j++){
if(C[j] == 0){
if(R[i][j] == 1) len += bt;
bt *= 2;
}
}
}
mind++;
vector<bool> message;
for(int i = mind; i < n; i++){
for(int j = 0; j < 31; j++){
if(C[j] == 0) message.pb(R[i][j]);
}
}
while(message.size() > len) message.pop_back();
return message;
}
