南阳64

#include<stdio.h>
int main()
{
    //freopen("in.txt","r",stdin);
    int a,n,m;
    while(~scanf("%d",&a))
    {
        while(a--)
        {
            scanf("%d%d",&n,&m);
            if(n*2 > m||m%2)
                printf("No answer\n");
            else
            {
                printf("%d %d\n",n-(m-(2*n))/2,(m-(2*n))/2);
            }
        }
    }
}