Huge program size C++ with std::regex

I want to compile small C++ program with std::regex (standart regular expression library). Compiler - gcc/g++ 4.9.2 on Fedora 21.

#include <string.h>
#include <iostream>
#include <regex>
using namespace std;
int main () {
cout << "Content-Type: text/html\n\n";
  std::string s ("there is a subsequence in the string\n");
  std::regex e ("\\b(sub)([^ ]*)");   // matches words beginning by "sub"
  std::cout << std::regex_replace (s,e,"sub-$2");
}

It's not possible to compile program with std::regex without -std=c++11, so suitable instruction for compiling in terminal:

g++ -std=c++11 code.cpp -o prog

Main question: source code very small, but why the final file size of compiled program such a huge - 480 kilobytes?

Is it influence of -std=c++11?

What happened and how is it possible to reduce the size of the final binary program?

Sorry for my English, I'm not native speaker.