BerPhone x ready release n application preinstalle phone a category application characterize genre theme application like game business education the category give integer 1 n inclusive ith application category c_i you choose m number screen s size screen you need fit n icon application icon represent application meeting follow requirement on screen icon belong application category different screen contain icon application category each screen completely fill icon number icon screen equal tos fill icon number icon equal s1 your task find minimal possible number screen m