//ProjectEuler/C++/Headers/Problem27.hpp
//Matthew Ellison
// Created: 09-14-19
//Modified: 09-14-19
//Find the product of the coefficients, |a| < 1000 and |b| <= 1000, for the quadratic expression that produces the maximum number of primes for consecutive values of n, starting with n=0.
//Unless otherwise listed all non-standard includes are my own creation and available from https://bibucket.org/Mattrixwv/myClasses
/*
Copyright (C) 2019 Matthew Ellison
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see .
*/
#ifndef PROBLEM27_HPP
#define PROBLEM27_HPP
#include
#include
#include
#include "Problem.hpp"
class Problem27 : public Problem{
private:
int64_t topA; //The A for the most n's generated
int64_t topB; //The B for the most n's generated
int64_t topN; //The most n's generated
std::vector primes; //A list of all primes that could possibly be generated with this formula
public:
Problem27();
virtual void solve();
virtual std::string getString() const;
int64_t getTopA() const;
int64_t getTopB() const;
int64_t getTopN() const;
};
/* Results:
The greatest number of primes found is 70
It was found with A = -61, B = 971
The product of A and B is -59231
It took 2.076 seconds to solve this problem.
*/
#endif //PROBLEM27_HPP