def cells():
    from sums import inc
    inc(100)
    int(10000 + 2345)


def sumup(N):
    N = int(N)
    int((N * (N + 1)) / 2)


def sum(a, b):
    a, b = int(a), int(b)
    int(a + b)

def cells():
    from sums import inc
    inc(100)
    int(10000 + 2345)


def sumup(N):
    N = int(N)
    int((N * (N + 1)) / 2)


def sum(a, b):
    a, b = int(a), int(b)
    int(a + b)
