#include<bits/stdc++.h>
using namespace std;
int main()
{
	long long n,x;
	char c;
	for(int i=1;i<=3;i++)
	{
		cin>>n;
		if(i==1) cout<<"#";
		string s;
		while(n!=0)
		{
			x=n%16;
			if(x<10) c=x+'0';
			else c=x+'A'-10;
			s=c+s;
			n=n/16;
		}
		if(s=="") cout<<0;
		else cout<<s;
	}
    return 0;
}