#include<iostream>

using namespace std;

int main () {

    int a,b;



    const int gcd(const int a_, const int b_)

    cout<<"ievadiet 2 pozitivus skaitlus"<<endl;
    cin>>a>>b;

}


	int a= a_;
	int b= b_;
	int h;

	while (b!=0)
	{
		h=a%b;
		a=b;
		b=h;
	}

	return a;
}
}

    return 0;
}