View Compilation Error

0_0_32280401_2692.cpp:1:2: error: 'One' does not name a type
  One day , Partychen gets several beads , he wants to make these beads a necklace . But not every beads can link to each other, every bead should link to some particular bead(s). Now , Partychen wants to know how many kinds of necklace he can make. 
  ^