#include <iostream>
#include <iomanip>
using namespace std;
int main()
{
float n, a, x, d, z;
setlocale(0, "");
cout << "Ââåäèòå êîëëè÷åñòâî âû÷èñëåíèé : \n";
cin >> n;
if (n < 0){
n = -n;
a = 1.5;
x = -0.7;
d = a / 5;
}

else {
cout << "\nÂâåäèòå A : ";
cin >> a;
cout << "\nÂâåäèòå íà÷àëî ïîçèöèè Õ1 : ";
cin >> x;
cout << "\nÂâåäèòå øàã dX : ";
cin >> d;
}
//cin>>a>>x>>d;
cout << "\n\n";
cout.width(2);
cout<<"N";
cout.width(6);
cout<<"X";
cout.width(8);
cout<< "Y" << "\n\n";

for (int i = 0; i< n;i++){
z = -z;
cout.width(2);
cout<< (i + 1);
cout.width(6);
cout<<x;
cout.width(8);
cout<< z << "\n";
x = x + d;
}

}