Task: Program Execution
Input (English): u, 1999, 6285, 2859, W, 4197, 4533, 9919, G, 8043, q, U, S, p, 1145, O, k, 6879
Output (English): 1999, 6285, 2859, 4197, 4533, 9919, 8043, 1145, 6879