Task: Program Execution
Input (English): 4, ['Q', 'u', 'b', 'Y', 'h', '3919', '3269', 'S', 'U', 'I', '871', 'R', 'N', '4425', '5403', '4063', '7485', 'I', '2639', 'E', 'n', 'j', 'R']
Output (English): Q, u, b, Y