Task: Program Execution
Input (English): 3345, 4321, 1231, y, 7975, 6541, 6051, 4269, L, 9717, m, Y, 1387, 1027, C, M, A, 3557, e, R, p
Output (English): 1, 2, 3, 5, 6, 7, 8, 10, 13, 14, 18