백준 - 10610번

문제

https://www.acmicpc.net/problem/10610

10610번: 30

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코드

N = input()
lst = list(map(int, N))
total = sum(lst)

if total % 3 == 0:
    lst.sort(reverse=True)
    if lst[-1] == 0:
        print(''.join(map(str, lst)))
    else:
        print(-1)
else:
    print(-1)