#include <iostream>
#include <math.h>
using namespace std;

double foo(double *px)
{
    double sum = 0;
    for (int i = 1; i < 6; i++) {
        sum += exp(2 * cos(i * (*px))) * pow((*px), cos(i));
    }
    return sum;
}
int main()
{
    double a = 0.25;
    for (double x = a; x < 0.81; x += 0.055) {
        cout << "x = " << x << "  " << "sum = " << foo(&x) << endl;
    }
}