#include
using namespace std;
double square(double x) {
return x*x;
}
double maxi(double x, double y) {
if (x>y)
return x;
else
return y;
}
int main() {
double a1,a2,s1,s2;
cin >> a1 >> a2;
cout << "s=" << maxi(square(a1),square(a2)) << endl;<br> return 0;
}