#include "Annalib.h"
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
void Anna(int n, ll x, int k, int* S){
vector<int> P;
for(int i = 0; i < n; ++i){
P.push_back(i);
}
unsigned seed = 5;
shuffle (P.begin(), P.end(), default_random_engine(seed));
int it = 0;
while(x > 0){
int reszta = x % 3;
ll C = P[it];
ll N = P[it+1];
if(S[C] == 0 and S[N] == 0){
if(reszta == 2){
Set(C, 1);
Set(N, 1);
it+=2;
}
else if(reszta == 1){
Set(C, 1);
Set(N, 0);
it+=2;
}
else{
Set(C, 0);
Set(N, 1);
it+=2;
}
x /= 3;
}
else if(S[C] == 0 and reszta == 1){
Set(C, 1);
Set(N, 0);
it += 2;
x /= 3;
}
else if(S[N] == 0 and reszta == 0){
Set(C, 0);
Set(N, 1);
it += 2;
x /= 3;
}
else{
Set(C, 0);
Set(N, 0);
it += 2;
}
}
while(it < n) {
ll C = P[it];
Set(C, 0);
++it;
}
return;
}
#include "Brunolib.h"
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
ll Bruno(int n, int* A){
vector<int> P;
for(int i = 0; i < n; ++i){
P.push_back(i);
}
unsigned seed = 5;
shuffle (P.begin(), P.end(), default_random_engine(seed));
ll pot = 1;
ll S = 0;
for(int i = 0; i < n; i += 2){
if(A[i] == 0 and A[i+1] == 0){
continue;
}
else if(A[i] == 1 and A[i+1] == 1){
S += 2 * pot;
pot *= 3;
}
else if(A[i] == 1){
S += pot;
pot *= 3;
}
else{
pot *= 3;
}
}
return S;
}
