#include"communication.h"
#include<bits/stdc++.h>
#define pb push_back
#define all(v) v.begin(),v.end()
#define forf(i,s,e) for(int i = s; i<=e; i++)
#define forb(i,s,e) for(int i = s; i>=e; i--)
#define idx(i,v) lower_bound(all(v),i)-v.begin()
#define comp(v) v.erase(unique(all(v)),v.end())
#define sz(v) (int)v.size()
#define fs first
#define se second
#define SP << " " <<
#define LN << "\n"
#define IO cin.tie(0);cout.tie(0);ios_base::sync_with_stdio(false);
using namespace std;
typedef long long ll;
ll inf = 1e18;
vector<int> message[3] =
{{0,0,0,0,0},
{0,1,1,0,1},
{1,1,1,1,1}};
void encode(int N, int X) {
int trash;
forf(i,0,4) trash = send(message[X-1][i]);
}
std::pair<int, int> decode(int N) {
vector<int> ans;
vector<int> R;
forf(i,0,4) R.pb(receive());
forf(x,0,2){
int f = 1;
forf(i,0,3) if(R[i]!=message[x][i] && R[i+1]!=message[x][i+1]) f = 0;
if(f) ans.pb(x+1);
}
assert(sz(ans) <= 2);
if(sz(ans) == 1) return {ans[0], ans[0]};
else return {ans[0], ans[1]};
}
