n, total = int(input()), 0
for i in range(n):
k = int(input())
if 0 <= k < 10:
total += k
print(total)
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Answers & Comments
n, total = int(input()), 0
for i in range(n):
k = int(input())
if 0 <= k < 10:
total += k
print(total)