cup = 0 cdown = 0 alls = 0 while True: try: a = int(input())

    if a > 0:
        alls += a
        cup += 1
    elif a < 0:
        cdown +=1
        
except EOFError:
    print(cdown)
    if cup > 0:
        print("{a:.1f}".format(a=alls/cup))
    else:
        print(0.0)
    break