题解 | #记负均正II#

import sys

num_list = []

for line in sys.stdin:
    num_list.append(int(line.split()[0]))
    
f_list = []
n_list = []
for i in num_list:
    if i < 0:
        f_list.append(i)
    else:
        n_list.append(i)
        
print(len(f_list))
if n_list:
    print(round(sum(n_list)/len(n_list),1))
else:
    print(0.0)
#学习记录#