题解 | #记负均正II#
记负均正II
https://www.nowcoder.com/practice/64f6f222499c4c94b338e588592b6a62
from math import e
try:
sum = 0
counter = 0
counter1 = 0
while True:
n = int(input())
if n < 0:
counter1 += 1
else:
sum += n
counter += 1
except EOFError:
print((counter1))
if counter == 0:
print('0.0')
else:
print(f'{(sum / counter):.1f}')
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