欧几里得算法

#include

using namespace std;


int Eucld(int a, int b)
{
	if (a < b)
	{
		int t = a;
		a = b;
		b = t;
	}
	if (b == 0)
		return a;
	else
	{
		int t = b;
		b = a%t;
		a = t;
		return Eucld(a, b);
	}
}
void main()
{

	int a, b;
	cin >> a >> b;
	cout<