업데이트 'src/kr/co/swh/lecture/algorithm/Lv4-3.py'

src/kr/co/swh/lecture/algorithm/Lv4-3.py

     a=a//3
     if b == 0:
         r.append(4)
-        a-=1
+        a = a-1
     else:
         r.append(b)
 r.reverse()