tsarevfs

std::string str = boost::str(boost::format("%.2f") % temp);

class A
{
public:
   template <typename T>
  operator T() const;
};
 
template <typename T>
A::operator  T() const
{   
   return T();
}

def check_possibility(figures, signs = [], is_100 = False):
    for sign in ('', '+', '-', '*', '//'):
        new_signs = signs[:]
        new_signs.append(sign)
        if len(signs) == 5:
            numeric_expression = ''
            numeric_expression += figures[0]
            for i in range(5):
                numeric_expression += signs[i]
                numeric_expression += figures[i + 1]
            result = eval(numeric_expression)
            if result == 100:
                return numeric_expression
            else:
                return False
        elif is_100 == False:
            is_100 = check_possibility(figures, new_signs, is_100)
    return is_100

print check_possibility([str(n) for n in range(2, 8)])