package test3;
import java.*;
import java.util.*;
public class Main112 {
public static int value(char x){
if(x>='0'&&x<='9')
return x-'0';
if(x>='a'&&x<='f')
return x-'a'+10;
if(x>='A' && x<='F') return x-'A'+10;
return 0;
}
public static String jinzhi(String x,int q ,int m){
int n=0;
for(int i=0;i<x.length();i++){
n=q*n+value(x.charAt(i));
}
String t ="";
for(;;){
if(n==0)break;
t=(n%m)+t;
n/=m;
}
return t;
}
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
String s = sc.nextLine();
int q = sc.nextInt();
int m = sc.nextInt();
System.out.println(jinzhi(s,q,m));
}
}