import java.util.Scanner;
public class Main {
public static void answer(long n){
char[] c = {'0','1','2','3','4','5','6','7','8','9','`','!','@','#','$','%',
'^','&','*','(',')','{','}','\\','<','>','?'};
long temp = n;
String answer = "";
while (temp != 0) {
int x = (int)(temp % 27);
answer = c[x] + answer;
temp /= 27;
}
System.out.println(answer);
}
public static void main(String[] args) {
Scanner in = new Scanner(System.in);
long n = in.nextLong();
answer(n);
}
}