Problem 43108. How many complete pizzas

x is a vector with numbers of pizza slices. A corresponding vector n indicates in how many slices the pizza slices of x were cut. How many complete pizzas do we have?

Example:

 x = [1 3 12];
 n = [2 6 8];

in the first column we have on slice (x=1) from a pizza cut in half (n=2) -> half a pizza. in the second column we have 3 slices (x=3) from a pizza cut in 6 slices (n=6) -> so half a pizza. in the third column we have 12 slices of a pizzas cut in 8 slices ->1.5 slices.

This combines to 2.5 pizzas, so we have 2 complete pizzas!