A + B - 5
import sys
for line in sys.stdin:
x,y = map(int,line.split())
if x == 0 and y == 0:
continue
else:
print(x+y)
볕 좋은 날 시작하는 개발일기
import sys
for line in sys.stdin:
x,y = map(int,line.split())
if x == 0 and y == 0:
continue
else:
print(x+y)