#include <list> 
#include <algorithm> 
#include <iostream> 

int main() 
{ 
  std::list<char> l; 
  l.push_back('a'); 
  l.push_back('b'); 
  l.push_back('c'); 

  std::cout << std::count(l.begin(), l.end(), 'c') << std::endl; 
}