#include "message.h"
#include <bits/stdc++.h>
#define endl "\n"
#define ll long long
using namespace std;
mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count());
ll a[31], used[31];
void send_message(vector<bool> a, vector<bool> c)
{
reverse(a.begin(), a.end());
a.push_back(1);
while (a.size() < 1025) a.push_back(0);
vector<vector<bool>> send(66, vector<bool>(31));
ll ptr = 0;
for (ll i = 0; i < 31; i++) if (!c[i])
{
ll pos = (i + 1) % 31;
while (c[pos]) pos = (pos + 1) % 31;
send[(pos - i + 31) % 31 - 1][i] = 1;
for (ll j = (pos - i + 31) % 31; j < 66; j++) send[j][i] = a[ptr++];
}
for (ll i = 0; i < 66; i++) send_packet(send[i]);
}
vector<bool> receive_message(vector<vector<bool>> send)
{
vector<bool> ans(1025), c(31, 1);
for (ll i = 0; i < 31; i++)
{
ll dist = 0;
while (dist < 31 and send[dist][i] == 0) dist++;
a[i] = (i + dist + 1) % 31;
}
vector<ll> fixed;
vector<bool> used(31);
for (ll i = 0; i < 31 and fixed.size() < 16; i++)
{
used.assign(31, 0);
ll cur = a[i];
fixed = {i};
while (cur != i and !used[cur]) used[cur] = 1, fixed.push_back(cur), cur = a[cur];
if (cur != i)
fixed.clear();
}
ll ptr = 0;
for (ll i : fixed) c[i] = 0;
for (ll i = 0; i < 31; i++)
if (!c[i])
{
ll pos = (i + 1) % 31;
while (c[pos]) pos = (pos + 1) % 31;
for (ll j = (pos - i + 31) % 31; j < 66; j++) ans[ptr++] = send[j][i];
}
while (ans.back() == 0) ans.pop_back();
ans.pop_back();
reverse(ans.begin(), ans.end());
return ans;
}
