Task: Program Execution
Input (English): 2, 6, ['5399', 'U', 'p', 'w', '891', '1607', 'A', '4555', '2903', '4361', '5389', '2707', 'Z', 'B', '5975', '8843', 'R', '8945', 'n', 'N', '7713']
Output (English): U, 4555, B, N