llllol

#include <stdio.h>
#include <stdlib.h>
typedef double T;

T f( T x )
{
	return 1/(x*x);
}

T F( T x )
{
	return -1/x;
}

T Integral0( T left, T right, long N, T (*pf)(T) )
{
	T	S = 0.0;
	T	x, dx;

	dx = (right - left) / N;
	for ( x = left; x <= right; x += dx ) {
		S += dx * ( pf( x ) + pf( x+dx ) ) / 2.0;
	}
	return S;
}

int main()
{


	T	L = 0.000001;
	T	R = 1000;
	T	F0 = F(R)-F(L);
	long n;

	for ( n=10000; n<100000000; n*=1.2 ) {
		printf(  "%ld       %g\n",n, (Integral0(L,R,n,f)-F0)/F0);
	}


	return 0;
}