Task: Program Execution
Input (English): 19, 20, ['5953', '5679', '4937', '5645', '7133', '3405', 'N', 'H', '4049', '5001', 'n', 'a', 'B', '3687', 'g', 'Z', '6865', '8691', '1305', 'x']
Output (English): 1305