# BOJ - 1431 - 시리얼 번호

Updated:

```
import sys
def isDigitCheck(number) :
answer = 0
for i in number :
if i >= '0' and i <= '9' :
answer += int(i)
return answer
def solution():
N = int(sys.stdin.readline())
number = []
for _ in range(N):
number.append(sys.stdin.readline().strip())
number = sorted(number, key=lambda x: (len(x), isDigitCheck(x), x))
for n in number:
print(n)
solution()
```

https://www.acmicpc.net/problem/1431

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