Task: Program Execution
Input (English): 10, 15, ['3603', '367', '189', '6431', '2355', 'g', '8841', 'H', 'L', '4387', 'k', '5253', '6945', '6555', 'Y', 'Q', 'c', '977', '5377']
Output (English): 4387, k, 5253, 6945, 6555, Y