one day wellknown sponsor wellknown contest decide participant contest Tshirt present a natural problem occur hand clear tshirt size order hand do not want order tshirt exactly paper wall oversupply after considerable brain rack preestimate sponsor representative order certain number tshirt size S M L XL XXL the Tshirts turn bring good luck that s contest day build line K participant willing every contestant characterize hisher desire Tshirt size happen participant size S M L XL XXL the participant come Tshirt try choose suitable choosing like if Tshirt optimal size leave heshe take ado otherwise contestant prefer choose Tshirt size close optimal possible distance neighboring size consider equal if variant choice unique contestant Tshirt big size case heshe grow for example person optimal size L preference list look like L XL M XXL S use datum tshirt size order organizer size contestant line determine get Tshirt size