QC is good at drawing. Now he wants to say numbers like “
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?
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.
3 3 1 2 3 5 2 1