#include "message.h"
#include <bits/stdc++.h>
using namespace std;
const int LIMIT = 66;
void send_message(std::vector<bool> M, std::vector<bool> C) {
std::vector<bool> A(31, 0);
std::vector<bool> send[31];
std::vector<int> zeros;
for (int i = 0; i < 31; ++i) {
if (C[i] == 0) {
zeros.push_back(i);
}
}
zeros.push_back(zeros[0] + 31);
for (int i = 0, j = 1; i < 31; ++i) {
if (C[i] == 0) {
int dist = zeros[j] - i;
for (int d = 1; d < dist; ++d) {
send[i].push_back(1);
}
send[i].push_back(0);
++j;
}
}
int cur = (int)M.size() - 1025;
for (int i = 0; i < 31; ++i) {
if (C[i] == 0) {
while (cur < -1 && send[i].size() < LIMIT) {
send[i].push_back(0);
cur++;
}
while (cur == -1 && send[i].size() < LIMIT) {
send[i].push_back(1);
cur++;
}
while (cur < (int)M.size() && send[i].size() < LIMIT) {
send[i].push_back(M[cur++]);
}
} else {
while (send[i].size() < LIMIT) {
send[i].push_back(0);
}
}
}
for (int i = 0; i < LIMIT; ++i) {
for (int j = 0; j < 31; ++j) {
A[j] = send[j][i];
}
send_packet(A);
}
}
std::vector<bool> receive_message(std::vector<std::vector<bool>> R) {
std::vector<bool> C[31];
int N = R.size();
for (int i = 0; i < N; ++i) {
for (int j = 0; j < 31; ++j) {
C[j].push_back(R[i][j]);
}
}
int diff[31] = {};
for (int i = 0; i < 31; ++i) {
if (C[i][0] == 0) {
diff[i] = 1;
C[i].erase(C[i].begin());
} else {
int d = 0;
while (!C[i].empty() && C[i][0] == 1) {
C[i].erase(C[i].begin());
++d;
}
diff[i] = d + 1;
if (!C[i].empty()) C[i].erase(C[i].begin());
}
}
int start = -1;
for (int i = 0; i < 31; ++i) {
if (diff[i] == 0) continue;
int cur = i;
int depth = 0;
while (depth < 16) {
cur = (cur + diff[cur]) % 31;
++depth;
if (cur == i) break;
}
if (depth == 16 && cur == i) {
start = i;
break;
}
}
assert(start != -1);
vector<bool> res;
int cur = start;
bool started = false;
for (int i = 0; i < 16; ++i) {
for (auto u : C[cur]) {
if (u == 1 && !started) {
started = true;
continue;
}
if (started) res.push_back(u);
}
cur = (cur + diff[cur]) % 31;
}
return res;
}
