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