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
n = int(input())
g = 0
for _ in range(n):
l = list(map(int,input().split()))
s = l[0] + l[1] +l[2]
a = s / 3
if a < 60:
g = g + 1
print(g)
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