Task: Program Execution
Input (English): Z, m, 8015, 4689, s, 7573, R, z, 7243, 4853, 7763, Q, 2293, N, 7553, 5787, E, l, 9703, k, 8521, 8533, 9121
Output (English): 1, 2, 5, 7, 8, 12, 14, 17, 18, 20