Task: Program Execution
Input (English): 1, 7, ['c', '5771', 't', 'h', '4383', '8187', '2003', 'P', '839', '9679', 'k', 'c', 'm', '8115', 'R', 'q', 'g', '9123', '7473', '3179', '881', 'p']
Output (English): c, P, R, p