Task: Program Execution
Input (English): 8735, U, N, R, 4099, 4997, 9715, 4601, 585, 8309, 9021, 2253, 835, C, 6531, 2245, u, C, 5943, 2969, 2673, s, 3081, 4273
Output (English): U, N, R, C, u, C, s, 8735, 4099, 4997, 9715, 4601, 585, 8309, 9021, 2253, 835, 6531, 2245, 5943, 2969, 2673, 3081, 4273