2025-08-01 16:57:25 +0300 MSK

Unique Email Addresses
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Code

class Solution:
    def numUniqueEmails(self, emails: List[str]) -> int:
        enc = set()
        for email in emails:
            name, domain = email.rsplit("@", 1)
            name = name.split("+", 1)[0].replace(".", "")
            enc.add("@".join((name, domain)))
        return len(enc)