#include "biscuits.h"
#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define all(a) (a).begin(), (a).end()
#define ff first
#define ss second
template<typename T>
int len(T &a){return a.size();}
mt19937 rng(chrono::high_resolution_clock::now().time_since_epoch().count());
vector<ll> cnt;
ll x;
map<pair<ll,ll>,ll> mp;
ll count(int i, ll j){
if(i == 63){
return 1;
}
if(mp.count({i, j})) return mp[{i, j}];
ll res = 0;
res += count(i + 1, (j + cnt[i]) / 2);
if(j + cnt[i] >= x){
res += count(i + 1, (j - x + cnt[i]) / 2);
}
return mp[{i, j}] = res;
}
long long count_tastiness(long long X, vector<long long> A) {
cnt = A;
mp.clear();
x = X;
while(len(cnt) < 63){
cnt.push_back(0);
}
return count(0, 0);
}
