401362: GYM100418 B Sum of sequences

You finished RIUSB ACBJSO university few years ago and started working hard and growing your carrier. At the some moment you tried to pass an interview at the XEDNAY company. You successfully answered all tricky questions about advanced algorithms and data structures and got the last one. Given two sequences A, B you need to find the following sum:

Input contains three lines. First contains two numbers lengths of sequences |A|, |B|. Second and third line contains |A| and |B| numbers separated by spaces (1 ≤ |A|, |B| ≤ 10⁵, 1 ≤ A_i, B_i ≤ 10⁴).

Single line containing answer to the task.

5 4
3 4 5 4 4
1 2 3 4

42