#include <iostream>
#include <string>
using namespace std;
const unsigned space = 65;
int main()
{
unsigned n = 0;
cin >> n;
for (unsigned i = space; i < space + n; ++i) {
string str(i - (space - 1), (char)i);
cout << str << endl;
}
return 0;
}
R = ((2*x)/(34*a+cos(x))) + log(x)