#1574 Prietene

#include<iostream>
using namespace std;

int main()
{
int a,sa,b,sb,d;

cin>>a;
cin>>b;
sa=1;
for(d=2;d<=a/2;d++)
if(a%d==0)
sa=sa+d;

if(sa==b)
{
sb=1;
for(d=2;d<=b/2;d++)
if(b%d==0)
sb=sb+d;

if(sb==a)
cout<<"PRIETENE";
}
else
cout<<"NU SUNT PRIETENE";
}