#include "stdafx.h"
#include <iostream>
#include <cmath>
using namespace std;
const double e=0.0001;
int main()
{
    double y,x,t;
	cin>>x;
	y=0;
	t=x;
	if
	while (fabs(t)>e)
	{
		y=y+t;
		t=(t*(3*x*x-0,1*x+7)+((x-1)/(x*x-x+1))+(3*pow(cos(y),2)))/((3*x*x-0,1*x+7)-(3*sin(2*y)))
	}
}