Task: Program Execution
Input (English): 4, ['M', '3507', '5431', '1887', 't', 'X', 'u', 'o', 'W', '2771', '3203', 'h', '9947', '1527', 'a', 'C', '6955', '7165', '1051', '6315', '1691', 's']
Output (English): M, 3507, 5431, 1887