n = input() # a = list(map(int,input().split())) a = list(n) a =[int(x) for x in a] """ input 14865 output 86541 """ n = len(a) for i in range(n - 1): minIdx = i for j in range(i + 1, n): if a[j] > a[minIdx]: minIdx = j a[minIdx], a[i] = a[i], a[minIdx] b = [str(t) for t in a] print(''.join(b))