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headers/Problems/Problem27.hpp
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headers/Problems/Problem27.hpp
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//ProjectEuler/ProjectEulerCPP/headers/Problems/Problem27.hpp
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//Matthew Ellison
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// Created: 09-14-19
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//Modified: 08-28-20
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//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.
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//Unless otherwise listed all non-standard includes are my own creation and available from https://bibucket.org/Mattrixwv/myClasses
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/*
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Copyright (C) 2020 Matthew Ellison
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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#ifndef PROBLEM27_HPP
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#define PROBLEM27_HPP
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#include <string>
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#include <cinttypes>
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#include <vector>
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#include "Problem.hpp"
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class Problem27 : public Problem{
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private:
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//Variables
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//Instance variables
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int64_t topA; //The A for the most n's generated
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int64_t topB; //The B for the most n's generated
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int64_t topN; //The most n's generated
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std::vector<int64_t> primes; //A list of all primes that could possibly be generated with this formula
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public:
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//Constructor
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Problem27();
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//Operational functions
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virtual void solve(); //Solve the problem
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virtual void reset(); //Reset the problem so it can be run again
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//Gets
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virtual std::string getResult(); //Return a string with the solution to the problem
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int64_t getTopA() const; //Returns the top A that was generated
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int64_t getTopB() const; //Returns the top B that was generated
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int64_t getTopN() const; //Returns the top N that was generated
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};
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/* Results:
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The greatest number of primes found is 70
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It was found with A = -61, B = 971
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The product of A and B is -59231
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It took an average of 2.176 seconds to run this problem over 100 iterations
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*/
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#endif //PROBLEM27_HPP
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