Task: Program Execution
Input (English): Z, 2867, 721, 1971, s, 4331, D, W, h, 9841, 5149, 4265, u, N, 1645, E, V, 389, 9025, 4595, V, 8711
Output (English): 1, 5, 7, 8, 9, 13, 14, 16, 17, 21