1 from typing import TypeVar, List, Iterable, Any, Callable, Optional
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5 def cmp_lt(x, y) -> bool: ...
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6 def heappush(heap: List[_T], item: _T) -> None: ...
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7 def heappop(heap: List[_T]) -> _T:
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8 raise IndexError() # if heap is empty
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9 def heappushpop(heap: List[_T], item: _T) -> _T: ...
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10 def heapify(x: List[_T]) -> None: ...
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11 def heapreplace(heap: List[_T], item: _T) -> _T:
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12 raise IndexError() # if heap is empty
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13 def merge(*iterables: Iterable[_T]) -> Iterable[_T]: ...
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14 def nlargest(n: int, iterable: Iterable[_T],
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15 key: Optional[Callable[[_T], Any]] = ...) -> List[_T]: ...
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16 def nsmallest(n: int, iterable: Iterable[_T]) -> List[_T]: ...
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