Task: Program Execution
Input (English): 1, 7, ['5257', 'p', '4845', '5081', '5775', '5677', '1479', 'j', '2603', '1285', 'L', 'X', '6989', '2767', '4887', '117', 'P', '4305', 'u']
Output (English): 5257, j, 4887