#ifndef Counter_hh
#define Counter_hh

struct Counter 
{
  Counter(unsigned int max) : value_(0), max_(max) {}

  int
  Add(unsigned int arg) 
    {
      if (arg > max_ - value_) {
	return 0;
      }
      value_ += arg;
      return 1;
    }

  int
  MultiplyAndAdd(unsigned int one, unsigned int two) 
    {
      unsigned long long op1 = one;
      unsigned long long op2 = two;
      unsigned long long prod = op1 * op2;
      if (prod > max_ || !Add(prod)) {
	return 0;
      }
      return 1;
    }

  unsigned int value_;
  unsigned int max_;
};

#endif