Solve T(n)=9T(n/3)+n via master method

Analyze the solve t(n)=9t(n/3)+n via master method.

Examples
Input: "test_input_1"
Output: "output_1"
Hints

Solve T(n)=9T(n/3)+n via master method

Analyze the solve t(n)=9t(n/3)+n via master method.