杭电acm 2040 亲和数

#include<iostream>
using namespace std;
int tg(int a);
int main()
{
int t,a,b;
cin>>t;
while(t--)
{
cin>>a>>b;
if(tg(a)==b&&tg(b)==a)
cout<<"YES"<<endl;
else
cout<<"NO"<<endl;
}
return 0;
}
int tg(int a)
{
int t=a;
int sum=0;
while(--t)
{
if(a%t==0)
sum+=t;
}
return sum;
}