题解 | #小乐乐算多少人被请家长#
小乐乐算多少人被请家长
https://www.nowcoder.com/practice/1654083e09d2432aa24b151d36309155
a = int(input())
n = 0
for i in range(1,a+1):
score = map(int,input().split())
average = sum(score) / 3
if average < 60:
n += 1
print(n)
#题解#
