用字典和列表方便些

解题思路:

注意事项:

参考代码:

n = int(input())
m = int(input())
sum=0
bj=-10
zd={1:[],2:[],3:[],4:[],5:[],6:[],
   7:[],8:[],9:[]}
sx=[1,2,3,4,5,6,7,8,9]
def swzh(l):
   sum1= 0
   while l>0:
       sum1 = sum1+l%10
       l = l//10
   return sum1
for i in range(1,n+1):
   t = swzh(i)
   if t in sx:
       zd[t].append(i)
   else:
       sx.append(t)
       zd[t]=[i]
sx.sort()
for l in sx:
   sum = sum+len(zd[l])
   bj=l
   if sum>=m:
       break
if sum==m:
   print(zd[bj][len(zd[bj])-1])
if sum>m:
   zd[bj].sort()
   sum = sum-len(zd[bj])
   print(zd[bj][m-sum-1])