def low_sum(n):
    result = 0
    for i in range(1, n + 1):
        if math.pi * i / n - math.pi / 2 == 0:
            result += 1
        else:
            result += math.sin(math.pi * i / n - math.pi / 2)/ (math.pi * i / n - math.pi / 2)
    return result

def up_sum(n):
    result = 0
    for i in range(1, n + 1):
        if math.pi * (i - 1) / n - math.pi / 2 == 0:
            result += 1
        else:
            result += math.sin(math.pi * (i - 1) / n - math.pi / 2)/ (math.pi * (i - 1) / n - math.pi / 2)
    return result

print(low_sum(10000))
print(up_sum(10000))