#include <fstream>
#include <string.h>
using namespace std;

/*
 * Lookup tables are awesome.
 * They suck all creativity out of you.
 * And leave you the impression that you're smart.
 * You're not.
 */

int fucking_lookup_table[100] = {
0, 1, 5, 2, 8, 3, 9, 2, 8, 7, 7, 8, 4, 7, 3, 8, 4, 1, 5, 4, 4, 5, 9, 6, 2, 
7, 3, 6, 2, 1, 1, 2, 8, 1, 7, 2, 8, 5, 9, 8, 8, 9, 3, 0, 6, 1, 7, 0, 6, 5, 
5, 6, 2, 5, 1, 6, 2, 9, 3, 2, 2, 3, 7, 4, 0, 5, 1, 4, 0, 9, 9, 0, 6, 9, 5, 
0, 6, 3, 7, 6, 6, 7, 1, 8, 4, 9, 5, 8, 4, 3, 3, 4, 0, 3, 9, 4, 0, 7, 1, 0 };

char* last_two_chars( char* buffer )
{
	if( strlen( buffer ) < 3 )
	{
		return buffer;
	}
	return buffer + strlen(buffer) - 2;
}

int main()
{	
	ifstream fin( "cifra.in" );
	ofstream fout( "cifra.out" );
	char* buffer = new char[100];
	int n;
	fin.getline( buffer, 100 );
	while( !fin.eof() )
	{
		int nr = 0;
		fin.getline( buffer, 100 );
		if( strlen( buffer ) > 0 )
		{		
			sscanf( last_two_chars(buffer), "%d", &nr );
			fout << fucking_lookup_table[nr] << endl;
		}
	}
	fin.close();
	fout.close();
	return 0;
}