1436. Destination City
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class Solution:
def destCity(self, paths: List[List[str]]) -> str:
s = {a for a, _ in paths}
return next(b for _, b in paths if b not in s)
class Solution:
def destCity(self, paths: List[List[str]]) -> str:
s = {a for a, _ in paths}
return next(b for _, b in paths if b not in s)