Task: Program Execution
Input (English): 4, 6, ['4159', 'l', '891', '8401', '4261', '2011', 'f', '5299', '9743', 'r', 'f', 'w', '8229', '6553', 'f', '9369', '7407', 'R', 'U', 's']
Output (English): 8401, r, 9369