[填空题]
Find the number of ways in which twelve different balo1 b ,n)/n; fmbcpkp(/ 9jyucseball .f4++tu ik78vxn)za7cg*yn gi*t r vzcards can be given to Emily, Harry, John and Olivia, if Emily is to receive 5 cards, Harry is to receive 3 zgf*8 k7++zv iuyrgnni4t vxc7)t a.*cards, John is to receive 3 cards and Olivia is to receive 1 card.
