#include <iostream>
#include <map>
#include <vector>
using namespace std;
#define ll long long
map<pair<int, ll>, ll> memo;
vector<ll> a;
int n;
ll x;
ll compute(int k, ll amount){
if(memo[{k, amount}] > 0)
return memo[{k, amount}];
if(k == a.size() - 1){
// last one
ll res = 1; // can always be zero
if(amount >= x) // can be 1
res++;
memo[{k, amount}] = res;
return res;
}
ll res = 0;
if(amount >= x)
res += compute(k+1, a[k+1] + (amount - x)/2); // can be 1
res += compute(k+1, a[k+1] + amount/2); // can be 0
memo[{k, amount}] = res;
// cout << k << " - " << amount << ": " << memo[{k, amount}] << endl;
return res;
}
long long count_tastiness(long long _x, vector<long long> _a){
memo.clear();
a = _a;
x = _x;
n = _a.size();
for(int i = 0; i < 100; i++)
a.push_back(0);
return compute(0, a[0]);
}
int main()
{
vector<ll> lol = {5,2,1};
cout << count_tastiness(3, lol) << endl;
vector<ll> lol2 = {5,1,5};
cout << count_tastiness(2, lol2) << endl;
cout << count_tastiness_two(2, lol2) << endl;
return 0;
}
Compilation message
biscuits.cpp: In function 'long long int compute(int, long long int)':
biscuits.cpp:18:10: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
18 | if(k == a.size() - 1){
| ~~^~~~~~~~~~~~~~~
biscuits.cpp: In function 'int main()':
biscuits.cpp:56:13: error: 'count_tastiness_two' was not declared in this scope; did you mean 'count_tastiness'?
56 | cout << count_tastiness_two(2, lol2) << endl;
| ^~~~~~~~~~~~~~~~~~~
| count_tastiness
