Task: Program Execution
Input (English): 15, 16, ['3083', 'q', '6921', 'r', '6775', 'N', '3253', 's', 'd', '5647', '3035', '1055', 'Z', '7637', 'X', 'g', '8157', '2219', '9025', 'm', '4235', 's']
Output (English): Xg