#include <stdio.h>
int main() {
int a, b;
while (1) {
if (scanf("%d %d", &a, &b) != 2) {
return 1;
}
if (a < 0 && a > 1000 && b < 0 && b > 1000) {
return 1;
}
if (a == 0 && b == 0) {
return 0;
}
printf("%d\n", a + b);
}
}
#include <iostream>
#include <cassert>
int main()
{
int a, b;
while (std::cin >> a >> b && a != 0 && b != 0)
{
assert(a>=0 && a<=1000 && b>=0 && b <= 1000);
std::cout << a + b << std::endl;
}
return 0;
}
import sys
lines = sys.stdin.read().splitlines()
for line in lines:
nums = list(map(int, line.split()))
if sum(nums) != 0:
print(sum(nums))
else:
sys.exit()