#include<bits/stdc++.h> using namespace std; int main() { int a,b; cin>>a>>b; for(int i=min(a,b);i>=1;i--){ if(b/2==a){ cout<<a<<","; break; } if(a%i==0&&b%i==0){ cout<<i<<","; break; } } for(int i=max(a,b);i<10000;i++){ if(b==a*2){ cout<<b; break; } if(i%a==0&&i%b==0){ cout<<i; break; } } return 0; }