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24 lines
436 B
24 lines
436 B
#!/usr/bin/python3
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# https://www.hackerrank.com/challenges/halloween-party
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import sys
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def count_gems(str, gems):
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tmp = [ False ] * 26
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for c in str:
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tmp[ord(c) - 97] = True
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for i in range(26):
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if not tmp[i]:
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gems[i] = False
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def main():
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N = int(sys.stdin.readline())
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gems = [ True ] * 26
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for _ in range(N):
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str = sys.stdin.readline().strip()
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count_gems(str, gems)
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print(sum(gems))
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if __name__ == '__main__':
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main()
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