the time you eat one big pizza is 10, and your brother eats 2 little pizza take 8,

so you and your brother finished all pizza will take 10 min,not 8min

eg: queue_time([2,10,3,4],2)

You have 2 box.

first , one box takes 2,and other one takes 10. 2 ,10

second, the box taken 2 will plus 3,the other box also 10. 2+3=5 ,10

because, 5<10,so the '10' box cannot take the number '4' 5+4=9 ,10

At last, you cann't take any number ,then you compare the boxs,return the max 10