Task: Program Execution
Input (English): 2, 20, ['s', '1801', '5951', '9605', 'U', '71', 'J', 'f', 'u', 'F', 'a', 'q', '1311', 'X', 'Y', 'y', 'G', 'h', '2001', '9593', 'Q', '1177', 'G', '7007', 'M', 'Y']
Output (English): 39591002hGyYX1131qaFufJ17U506915951081