Task: Program Execution
Input (English): 10, 11, ['9917', 'v', 'B', 'y', '9683', 'v', 'T', 'H', '4997', 'c', '9667', 'F', 'j', 'n', '6135', 'X', '2351', 'R', '5579', '4617', '9767']
Output (English): c9667