Task: Program Execution
Input (English): 1, 7, ['w', 'f', '8393', '1653', '4621', 'v', '3503', 'N', '4361', 'x', 'E', 'j', 'f', 'N', 'U', '8525', 'U', '5067', 'v', '1483', 'k', 'o', 'P']
Output (English): w, N, U, o