#include "biscuits.h"
#include<bits/stdc++.h>
using namespace std;
const int N = 70;
long long dp[N][2];
long long count_tastiness(long long x, std::vector<long long> a) {
for(int i = 0;i < a.size();i++){
if(a[i] > 2){
int d = (a[i]-1)/2;
if(i == a.size()-1) a.push_back(0);
a[i+1] += d;
a[i] -= 2*d;
}
}
a.push_back(0);
a.push_back(0);
dp[1][0] = (a[0] > 0 ? 2 : 1);
dp[1][1] = (a[0] > 1 ? 1 : 0);
for(int i = 2;i <= a.size();i++){
dp[i][0] = (a[i-1] == 0 ? dp[i-1][0]+dp[i-1][1] : 2*dp[i-1][0]);
dp[i][1] = (a[i-1] == 2 ? dp[i-1][0]+dp[i-1][1] : (a[i-1] == 0 ? 0 : dp[i-1][1]));
//cout << dp[i][0] << ' ' << dp[i][1] << endl;
}
return dp[a.size()][0];
}
