Submission #5068292

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Source Code Expand

# coding: utf-8
# Your code here!

N = input()
p = list("abcdefghijklmnopqrstuvwxyz")

if len(N) != 26:
    for i in N:
        p.pop(p.index(i))
    if p == []:
        print(-1)
        exit()
    print(N+p[0])
else:
    tmp = 0
    a = list("zyxwvutsrqponmlkjihgfedcba")
    if a == N:
        print("-1")
        exit()
    for i in range(25,-1,-1):
        for c in N:
            if c not in N[:i] and c > N[i]:
                print(N[:i]+c)
                exit()

Submission Info

Judge Result