Task: Program Execution
Input (English): 2, 18, ['3837', 'm', '4037', '7651', '8475', 'W', '5403', 'A', 'D', '7073', 'e', '9331', 'H', '1263', '2843', '777', 's', 'p', 'N', '7743', 'Q', 'Q', 'z', '5971', 's']
Output (English): m403776518475W5403AD7073e9331H12632843777sp