题解 | #记负均正#
记负均正
http://www.nowcoder.com/practice/6abde6ffcc354ea1a8333836bd6876b8
while True:
try:
n = int(input())
l = list(map(int,input().split(' ')))
nf = []
nz = []
for i in l:
if i > 0:
nz.append(i)
elif i < 0:
nf.append(i)
else:
continue
if len(nz) == 0:
print(len(nf),0.0)
else:
print(len(nf),round(sum(nz)/len(nz),1))
except:
break
try:
n = int(input())
l = list(map(int,input().split(' ')))
nf = []
nz = []
for i in l:
if i > 0:
nz.append(i)
elif i < 0:
nf.append(i)
else:
continue
if len(nz) == 0:
print(len(nf),0.0)
else:
print(len(nf),round(sum(nz)/len(nz),1))
except:
break
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