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Python import sys n = int(sys.stdin.readline()) if(n
Python import sys while(True) : try : a,b = map(int,sys.stdin.readline().split()) print(a+b) except : break; ===
Python import sys TF = True while(TF) : a,b = map(int,sys.stdin.readline().split()) if(a==0 and b==0) : TF = False else : print(a+b) ===