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Rostislav0 / Basic-Python Public

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Basic-Python

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11.5.py

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5 lines (5 loc) · 106 Bytes

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Basic-Python

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11.5.py

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5 lines (5 loc) · 106 Bytes

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a = []

for i in range(int(input())):

x = set(input().lower())

a.extend(x)

print(len(set(a)))

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