3
7 4
2 4 6
8 5 9 3
By starting at the top of the triangle below and moving to adjacent numbers on the row below, the maximum number from top to bottom is 23.
3
7 4
2 4 6
8 5 9 3
That is, 3 + 7 + 4 + 9 = 23.
Find the maximum total from top to bottom of the triangle.