Use of C++ HashMap
Original link: https://hsiaofeng.com/archives/204.html #include <iostream> #include <map> typedef unsigned long long ull; using namespace std; map<ull, ull> save; ull F(ull n){ if(save.count(n) != 0) return save[n]; else if(n % 2 == 0) return F(n – 1) + 2; else if(n == 1) return 0; else return F(n – 1) + F(n – 2) – 1; […]
Use of C++ HashMap Read More »