#include <iostream>
#include <math.h>

int S(int x, int yin);
int upi(int xin, int yin)
{
	  return (xin-S(xin,yin)-1);
}

int min(int x, int y)
{
	  return x>y?y:x;
}

int S(int x, int yin)
{
	int sum=0, i, sum1, sum2, dx=1;

	for(int i=2; i<=yin; i++)
	{

		sum2 = ( upi(i,(int)sqrt(i)) - upi(i-dx,(int)sqrt(i-dx)));

		if (sum2!=0)
		{
			sum1 = ( upi(x/i,min(i-dx,(int)sqrt(x/i))) - upi(i-dx,(int)sqrt(i-dx))) ;
			sum+=(sum1 * sum2);
		}
	}
	return sum;
} 

unsigned long long pi(unsigned long long x)
{
	return upi((int) x, (int) sqrt(x));
}