This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
#include "biscuits.h"
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
ll count_tastiness(ll x, vector<ll> a)
{
while (a.size() < 130)
a.push_back(0);
// ll s[131];
// for (int i = 0; i <= 130; i++)
// s[i] = 0;
// for (int t = 1; t <= 130; t++)
// {
// s[130 - t] = s[130 - t + 1] + a[130 - t];
// if (s[130 - t] >= 2 * x)
// s[130 - t] -= 2 * x;
// for (int i = 0; i < 130; i++)
// {
// s[i] *= 2;
// if (s[i] >= 2 * x)
// s[i] -= 2 * x;
// }
// }
map<ll, int>M[130];
function<ll(ll, int)>get = [&](ll d, int i)->ll
{
if (i == 130)
return 1;
if (M[i].count(d))
return M[i][d];
if (a[i] + d < x)
{
return M[i][d] = get((d + a[i]) / 2, i + 1);
}
else
{
return M[i][d] = get((d + a[i]) / 2, i + 1) + get((d + a[i] - x) / 2, i + 1);
}
};
return get(0, 0);
}
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