text:  class Solution:
      def XXX(self, num: int) -> str:
          l = [
          (1000,"M"),
          (900,"CM"),
          (500,"D"),
          (400,"CD"),
          (100,"C"), 
          (90,"XC"),
          (50,"L"),
          (40,"XL"),
          (10,"X"),
          (9,"IX"),
          (5,"V"),
          (4,"IV"),
          (1,"I"),
              ]
          res = ""
          for (bas,ch) in l:
              mul = num // bas
              if not mul:continue
              res += mul * ch
              num %= bas
              
          return res
  
  