include [HTML_REMOVED]
include [HTML_REMOVED]
include [HTML_REMOVED]
using namespace std;
int a,b;
int gcd(int a,int b){
if (b == 0) return a;
return gcd(b,a%b);
}
int main()
{
cin >> a >> b;
cout << gcd(a,b);
return 0;
}