제출 #921352

#제출 시각아이디문제언어결과실행 시간메모리
921352ksujay2비스킷 담기 (IOI20_biscuits)C++17
0 / 100
1055 ms348 KiB
#include <bits/stdc++.h> using namespace std; using ll = long long; ll count_tastiness(ll x, vector<ll> a) { int k = a.size(); function<ll(int, ll)> f = [&] (int i, ll y) { if(i < 0) return (ll)(y == 0); y = y - a[i] * (1LL << i); return f(i - 1, max(0ll, y)) + f(i - 1, max(0ll, y + x * (1LL << i))); }; return f(k - 1, 0); }
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