#include <iostream>
#include <boost/multiprecision/cpp_dec_float.hpp>
#include <boost/math/special_functions/factorials.hpp>

namespace mp = boost::multiprecision;

mp::cpp_dec_float_1000 calc(const mp::cpp_dec_float_1000& const_value) {
    mp::cpp_dec_float_1000 sum = 0;
    for (int k = 1; k <= 10000; ++k) {
        sum += pow(const_value, k) / boost::math::factorial<mp::cpp_dec_float_1000>(k);
    }
    return sum;
}

int main() {
    mp::cpp_dec_float_1000 result = calc(log(mp::cpp_dec_float_1000(2));
    std::cout << result << std::endl;
    return 0;
}