Submission #10831772

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Source Code Expand

import sys
read = sys.stdin.buffer.read
readline = sys.stdin.buffer.readline
readlines = sys.stdin.buffer.readlines

N = int(read())

alphabets = [chr(ord('a') + x) for x in range(26)]

def dfs(S, i):
    if len(S) == N:
        yield ''.join(S)
        return
    for j in range(i):
        for w in dfs(S + [alphabets[j]], i):
            yield w
    for w in dfs(S + [alphabets[i]], i + 1):
        yield w

for w in dfs([],0):
    print(w)

Submission Info

Judge Result