11 lines
150 B
Python
11 lines
150 B
Python
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import re
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s = input()
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matches = re.findall(r"[a-z]*h[a-z]*e[a-z]*l[a-z]*l[a-z]*o", s)
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if len(matches) >= 1:
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print("YES")
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else:
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print("NO")
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