Task: Program Execution
Input (English): 7, ['U', '1049', '6249', '2909', 'J', 'g', '4923', '4337', '6817', '9835', '4525', '5575', 'X', 'n', '2521', 'T', '7059', '7729', '8989', '1857', '6691', '1461']
Output (English): U, 4337, 2521, 1461