#include <stdio.h>
#include <math.h>
#include <conio.h>
void integraln (double x0, double x1)
{
double sum=x0*x0*x0/3-x1*x1*x1/3;
printf ("%lf\n", sum);
}
void integralr (double x0, double x1, int n)
{
int k=0;
double sum=0;
double sh=(x1-x0)/n;
for (double f=x0; k<n; i+sh, k++)
{
sum+=sh*((i+sh)*(i+sh)+f*f)/2;
}
printf ("%lf/n",sum);
}
void main ()
{
double n1, n2;
int f;
printf ("Enter number:");
scanf ("%lf %lf %d", &n1, &n2, &f);
integraln (n2,n1);
integralr (n1,n2,f);
}