<filename>BAEKJOON/Python/5717.py
import sys
while(True):
    a,b = map(int,sys.stdin.readline().split())
    if (a==0 and b==0):
        break
    else:
        print(a+b)
<filename>BAEKJOON/Python/5717.py
import sys
while(True):
    a,b = map(int,sys.stdin.readline().split())
    if (a==0 and b==0):
        break
    else:
        print(a+b)