Task: Program Execution
Input (English): n, 2503, r, 2839, s, f, 3383, c, C, 9555, 3057, 8585, 1291, i, d, N, U, 9007, Q, y, 1923, M, 733, E
Output (English): 2, 4, 7, 10, 11, 12, 13, 18, 21, 23