### Draw Something

Time Limit: 1000 ms Memory Limit: 65536 KiB

#### Problem Description

QC is good at drawing. Now he wants to say numbers like “521” to a girl through the game “Draw Something.
But he can’t write the digit directly. So he comes up a way that drawing several squares and the total area of squares is the number he wants to say.
Input all the square he draws, what’s the number in the picture?

#### Input

There are multiple test cases.
For each case, the first line contains one integer N(1≤N≤100) indicating the number of squares.
Second line contains N integers ai(1≤ai≤100)represent the side length of each square. No squares will overlap.

#### Output

For each case, output the total area in one line.

#### Sample Input

3
3 1 2
3
5 2 1


#### Sample Output

14
30