In Python, code blocks don't have curly braces to mark the beginning and end of the block. Instead, code blocks are defined by indentation. We will consider an extremely simplified subset of Python with only two types of statements. . A simple-statement is written in a single line, one per line A for-statement is a compound statement: it encompasses one or more other state- ments (either simple, for, or a mix of the two). Every statement contained by a for- statement must be indented one level further than the for-statement. You are given a sequence of n statements without indentation, represented by a boolearn array s: n] where si if the ith statement is a for-statement, and si0 if it is a simple-statement. sn is always 0. Design an efficient dynamic programming algorithm that calculates the number of ways in which the statements can be indented to form a valid Python program. If n 5, and s,1,0,0,0], then the answer is 6 (every line's indentation is pre-determined except the last two lines)