###O#######################*############
#*>:*            ::::= O=*OO      :<<<O=
#==:    !      OOO:=   *=*::    ==*<*<*=
#       *<<>>>>::::=== = =      X=======
# =\  / !      O  :<*=  >OO/=====/  * O<
#O==*/*  :<<<<<<======   :*=O* O*    =O=
#O===============O=**=======::O==    ::=
#:  :       :<<*=O=     : == :*     == =
#   :</   :<<====O      :         ==== =
# =         =O*=**       =       ::<== =
# =  ======  : ===== =====O    : : :== =
#*=  =*=**======O O=     ============= =
#==*:=O=   O :: ::**=    =*::::*    ::O<
#***= : =*=O====\ \      =======    *=O=
# === / ==:>>>:***=>\OO      O<====:@=O=
#    *>:  : ==****=A=T*****<<<==*   :<<=
########################################
750