#include <memory>

#include "boost/shared_ptr.hpp"

 

#include <boost/lambda/lambda.hpp>

#include <boost/lambda/bind.hpp>

 

//using namespace boost::lambda;

//using namespace std;

 

int main()

{

    std::vector<std::vector<std::string> > as;

    std::max_element(as.begin(), as.end(), boost::lambda::bind(&std::vector<std::string>::size, boost::lambda::_1) < boost::lambda::bind(&std::vector<std::string>::size, boost::lambda::_2));

}