题解 | 记负均正II
import sys
cnegative = 0
lother = []
while True:
try:
n = int(input())
if n < 0:
cnegative += 1
else:
lother.append(n)
except:
break
print(cnegative)
if len(lother) ==0:
print(0.0)
else:
print(round(sum(lother)/len(lother),1))
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