题解 | 多组_A+B_零尾模式
while(True):
a, b = map(int, input().split())
if a !=0 and b !=0:
print(a + b)
else:
break
while(True):
a, b = map(int, input().split())
if a !=0 and b !=0:
print(a + b)
else:
break
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