Students Above Average

Given list of (name, marks) tuples, return names of students above class average.

Your task

Implement this function:

def students_above_average(students: list) -> list:

Write the function only — the arguments are read for you and the return value is printed automatically.

Arguments arrive as one Python literal per line, in this order: students.

Example

Input

[('Alice', 80), ('Bob', 60), ('Carol', 90)]

Output

['Alice', 'Carol']