题解 | #记负均正II#

import sys
f_count = 0
ff_count = 0
ff_sum = 0
while True:
    try:
        c = int(input())
        if c < 0:
            f_count += 1
        else:
            ff_count += 1
            ff_sum += c
    except:
        break
print(f_count)
if ff_count == 0:
    print("0.0")
else:
    print(f"{ff_sum/ff_count:0.1f}")