2140. Solving Questions With Brainpower

class Solution:
    def mostPoints(self, questions: List[List[int]]) -> int:
        n = len(questions)
        f = [0] * (n + 1)
        for i in range(n - 1, -1, -1):
            p, b = questions[i]
            j = i + b + 1
            f[i] = max(f[i + 1], p + (0 if j > n else f[j]))
        return f[0]