Task: Program Execution
Input (English): 3949, 9137, N, 393, N, 4435, R, 8607, 2401, 2259, X, 2881, n, 5311, 5833, 4345, W, 7383, U, 6915
Output (English): 1, 2, 4, 6, 8, 9, 10, 12, 14, 15, 16, 18, 20