#include <stdio.h>
#include <stdlib.h>

int main()
{
  char s1[ 30 ], s2[ 30 ];
  char *delete( char *, char * );

  while ( scanf( "%s %s", s1, s2 ) != EOF )
  {
    char *p = delete( s1, s2 );
    puts( p );
    free( p );
  }
  return EXIT_SUCCESS;
}