Task: Program Execution
Input (English): 18, ['x', '349', 'W', '5423', '4317', 'X', 'z', 'V', '3803', 'R', '7071', '2889', '9147', 'k', '2707', 'P', '969', '4269', '4715', 'a', 'Z', 'f', 'g', '3023', '8877', '6861', 'k', 'K', 'd', 'C', '6735', 'u', 'A', 'F', 't', '1713', 'c', 't', 'k', '2861', '839']
Output (English): x, 4715, c