#include <iostream>

double maxi(double x, double y);

int main()
{
	double a,b;
	cin >> a >>b;
	cout << maxi(a,b);
	return 0;
}/*main*/

double maxi(double x, double y);
{
	cin>>x>>y;

	if( x < y )
		cout<< y;
	else 
		cout<< x;
}/*maxi*/