Task: Program Execution
Input (English): 4, 5, ['9457', 'E', 'v', 'I', 'w', 'U', 'c', '7241', 'F', 'Q', '2603', 'c', 'R', '2149', '1289', '5545', 'b', 'j', 'd', '851', '9317']
Output (English): I, F, 2149, d