def nearest_value(values: set[int], one: int) -> int:

def nearest_value(values: set, one: int) -> int:
    lst = list(values)
    lst.sort()
    for i in range(len(lst)):
        if lst[i] >= one:
            if i == 0:
                return lst[i]
            else:
                if lst[i] - one >= one - lst[i-1]:
                    return lst[i-1]
                else:
                    return lst[i]
    return lst[-1]