Task: Program Execution
Input (English): 4, 7, ['7157', 'C', '4251', 'N', 'X', 'm', 'U', 'd', 'a', '1071', 'w', 'X', 'u', 'j', '5347', '6203', 'z', 'e', 'Z', 'P', '6723', '1267', '2667', '9793', '6641', 'B', '7135', '9047', 'm']
Output (English): UmXN