Task: Program Execution
Input (English): 10, ['m', '5615', '3161', '1803', '1067', 'R', '6209', '8377', 'r', 'I', 'u', 'N', 'J', 'x', '7241', 'b', '6151', '4079', '2901', 'G']
Output (English): m, u