include<stdio.h>

include<stdlib.h>

include<math.h>

include<stdlib.h>

int main()
{
int a,b,c,d,sum1=0,sum2=0,x;
scanf(“%d”,&a);
for(b=0;b<a;b++)
{
scanf(“%d%d”,&c,&d);
sum1=sum2=0;
for(x=1;x<c;x++) if(c%x==0) sum1+=x;
for(x=1;x<d;x++) if(d%x==0) sum2+=x;
if(sum1==d&&sum2==c) printf(“YES\n”);
else printf(“NO\n”);
}
}