#include<iostream>
using namespace std;
string calc(int a)
{
    string s;
    while(a)
    {
        char c;
        if(a%13<=9)c=(a%13)+'0';
        else c=(a%13)-10+'A';
        s=c+s;
        a/=13;
    }
    if(s.size()==1)s='0'+s;
    if(s.size()==0)s="00";
    return s;
}
int main()
{
    int r,g,b;
    cin>>r>>g>>b;
    string s1,s2,s3;
    s1=calc(r);
    s2=calc(g);
    s3=calc(b);
    cout<<'#'<<s1<<s2<<s3<<endl;

    return 0;
}