#include <iostream>
 
using namespace std;
 
#define bit(x) (1UL << (x))
 
int main()
{
  unsigned int x = 0;
 
  x = 1; // 00000001
  cout<< x <<endl;
  x |= bit(1) | 1; // 00000011
  cout<< x <<endl;
  x |= bit(2) | 1; // 00000111
  cout<< x <<endl;
 
  // Get back a sliver
  cout<< (x >> 1) <<endl; // 00000011
  cout<< (x >> 2 << 2) <<endl; 00000100
}

#define bit(x) (1UL << (x))
 
int main()
{
  unsigned int x=0;
 
  x |= bit(0) | 1; // 00000001 = 1
  cout<< x <<endl;
  x |= bit(1) | 1; // 00000011 = 3
  cout<< x <<endl;
  cout<< (x >> 1 << 1) <<endl; // 00000010 = 2 
  x |= bit(2) | 1; // 00000111 = 7
  cout<< x <<endl;
  x |= bit(6) | 1; // 01000111 = 71
  cout<< x <<endl;
 
  // Get back a sliver
  cout<< (x >> 1) <<endl; // 00100011 = 35
  cout<< (x >> 2 << 2) <<endl; // 01000100 = 68
  cout<< (x >> 1) <<endl; // 00100011 = 35
  cout<< (x >> 1 << 1) <<endl; // 01000110 = 70
  cout<< (x >> 2 << 1) <<endl; // 00100010 = 34
 
  return 0;
}

#include <stdio.h>
 
unsigned int set(unsigned char nibble, int pos)
{
   return nibble << ( pos * 4 );
}
 
unsigned char get(unsigned int value, int pos)
{
   return ( value >> ( pos * 4 ) ) & 0xF;
}
 
int main ( void )
{
   unsigned int x = set(3,0) + set(7,1) + set(14,2) + set(6,3);
   int i;
   for ( i = 0; i < 4; ++i )
   {
      printf ( "get(%d) = %d\n", i, get(x,i) );
   }
   printf ( "x = %X\n", x );
   return 0;
}
 
/* my output
get(0) = 3
get(1) = 7
get(2) = 14
get(3) = 6
x = 6E73
*/

#include <stdio.h>

int main ( void )
{
   unsigned int   x;
   unsigned char  nibble;
   /*
    * Set the value 3 in the 0th nibble.
    */
   x = 3 << (0 * 4);
   printf ( "x = %04X\n", x );
   /*
    * Add in the value 7 in the 1st nibble.
    */
   x += 7 << (1 * 4);
   printf ( "x = %04X\n", x );
   /*
    * Add in the value 14 in the 2nd nibble.
    */
   x += 14 << (2 * 4);
   printf ( "x = %04X\n", x );
   /*
    * Add in the value 6 in the 3rd nibble.
    */
   x += 6 << (3 * 4);
   printf ( "x = %04X\n", x );
   /*
    * Get the value in the 1st nibble.
    */
   nibble = ( x >> (1 * 4) ) & 0xF;
   printf ( "nibble = %d\n", nibble );
   return 0;
}

/* my output
x = 0003
x = 0073
x = 0E73
x = 6E73
nibble = 7
*/

int main()
{
	unsigned int x, j;
	unsigned char  nibble;
 
	for (int i=0;i<4;i++)
	{
		cin>>j;cin.get();
		x+= j << (i * 4);
	}
 
	for (i=0;i<4;i++)
		cout<< hex << nibble = x << (i * 4) <<endl;
 
	return 0;
 
}