回答編集履歴
1
修正
answer
CHANGED
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@@ -1,5 +1,5 @@
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1
1
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```python
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2
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-
fmt = lambda x:','.join(str(x)[::-1][i*3:(i+1)*3] for i in range(len(str(x))//3
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2
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+
fmt = lambda x:','.join(str(x)[::-1][i*3:(i+1)*3] for i in range((len(str(x))+2)//3))[::-1]
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3
3
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4
4
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print(fmt(1234567))
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5
5
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```
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