Task: Program Execution
Input (English): 1, 7, ['5943', 'w', 'c', 'C', '1057', '4775', '4937', '6311', '7703', '2239', 't', '6631', 'C', 'G', 'Q', '649', 'x', '4791', '5797']
Output (English): 5943, 6311, Q