Task: Program Execution
Input (English): 7, 21, ['z', 'X', '1859', 'k', 'J', '1771', 'r', 'A', 'H', '5715', '9', '975', 'C', '59', '5943', 'w', '1841', 'h', 'F', '4561', 'j', 's', 'M']
Output (English): j4561Fh1841w594359C97595715HAr