#include<iostream>#include<string>#include<algorithm>using namespace std;//將十進制data轉換成N進制string TransToN(int data,int n){	string result="";	int index=0,i,j,temp[64];	if(data==0)	{		result="0";	}	else	{		do		{			temp[index++]=data%n;			data=data/n;		}		while(data!=0);		for(--index;index>=0;index--)		{			if(temp[index]<10)				result.append(1,temp[index]+'0');			else				result.append(1,temp[index]+'A'-10);		}	}	return result;}int main(){	int data,n=16;	while(cin>>data)	{		string result=TransToN(data,n);		cout<<result<<endl;	}	return 0;}