Wrote this to speed up my homework solving process instead of using excel.

cs-probability-hw1.cpp

#include <iostream>
#include <vector>
#include <cmath>

int main()
{
	std::vector<long double> v;
	{
		long double d;
		while(std::cin >> d)
		{
			v.push_back(d);
		}
	}
	long double r = 0.0;
	std::size_t const end = std::pow(2u, v.size());
	for(std::size_t i = 1; i < end; ++i)
	{
		long double t = 1.0;
		for(std::size_t j = 0; j < v.size(); ++j)
		{
			if((i >> j) & 1)
			{
				t *= v[j];
			}
			else
			{
				t *= (1.0L - v[j]);
			}
		}
		r += t;
	}
	std::cout << r << std::endl;
}