Task: Program Execution
Input (English): 20, 21, ['F', 'v', '5313', '7339', 'i', '6861', '5163', '6371', '5193', '6379', 'P', 'P', '2383', '9593', '2457', '1969', 'r', '3651', '6961', 'S', 'N', 'E', 's', '7509']
Output (English): 0