#include <stdio.h>
int main()
{
int a,b;
while(scanf("%d%d",&a,&b), a != 0 || b != 0) //用while循环,右边是循环进行的条件
printf("%d\n",a+b);
return 0;
}
#include <stdio.h>
int main()
{
int a,b;
while(scanf("%d%d",&a,&b), a != 0 || b != 0) //用while循环,右边是循环进行的条件
printf("%d\n",a+b);
return 0;
}