#include <iostream>
#include <math.h>
using namespace std;
int main() {
double S=0, E=0.00001, x, a, a1;
int k=1;
cout<<"Input x "<<endl ;
cin>>x;
a=pow(x,3)/2 ;
do
{ a1=a;
a=(-1)*x*x/(2*k+1)/(2*k+2);
S+=a;
k++;
} while( fabs(a1-a)>E );
cout<<"Summa= "<<S<<endl;
cout<<"kol="<<k<<endl;
return 0;
}
I2luY2x1ZGUgPGlvc3RyZWFtPgojaW5jbHVkZSA8bWF0aC5oPgp1c2luZyBuYW1lc3BhY2Ugc3RkOwoKaW50IG1haW4oKSB7CmRvdWJsZSBTPTAsIEU9MC4wMDAwMSwgeCwgYSwgYTE7CmludCBrPTE7CmNvdXQ8PCJJbnB1dCB4ICI8PGVuZGwgOwpjaW4+Png7CmE9cG93KHgsMykvMiA7CglkbwoJeyBhMT1hOwoJICBhPSgtMSkqeCp4LygyKmsrMSkvKDIqaysyKTsgCgkgIFMrPWE7CgkgIGsrKzsKCX0gd2hpbGUoIGZhYnMoYTEtYSk+RSApOwpjb3V0PDwiU3VtbWE9ICI8PFM8PGVuZGw7CmNvdXQ8PCJrb2w9Ijw8azw8ZW5kbDsKCQoJcmV0dXJuIDA7Cn0=