#include<stdio.h>
int main(){
    int a,c,b,i,n,m;
    scanf("%d",&a);
    for(i=1;i<=a;i++){
        scanf("%d %d",&n,&m);
        //n是总数量，m是总腿数
            c=(m-2*n)/2;
            b=n-c;
            //c是兔子，b是鸡
            if(m%2==0&&c>=0&&(m-4*n<=0)&&b>=0){
                printf("%d %d\n",b,c);
            }else{
            printf("No answer\n");}}
    return 0;}