You have number *a*, whose decimal representation quite luckily contains digits 1, 6, 8, 9. Rearrange the digits in its decimal representation so that the resulting number will be divisible by 7.

Number *a* doesn't contain any leading zeroes and contains digits 1, 6, 8, 9 (it also can contain another digits). The resulting number also mustn't contain any leading zeroes.
The first line contains positive integer *a* in the decimal record. It is guaranteed that the record of number *a* contains digits: 1, 6, 8, 9. Number *a* doesn't contain any leading zeroes. The decimal representation of number *a* contains at least 4 and at most 10<sup class="upper-index">6</sup> characters.
S='1689'
s=input()
Z=s.count('0')
s=s.replace('0','')
for i in S:t=s.index(i);s=s[:t]+s[t+1:]
k=0
for i in s:k=(k*10+ord(i)-ord('0'))%7
for a in S:
    for b in S:
        for c in S:
            for d in S:
                if len(set(a+b+c+d))==4 and (k*10000+int(a+b+c+d))%7==0:
                    print(s+a+b+c+d+'0'*Z)
                    exit()