Program
#include <bits/stdc++.h>
using namespace std;
int main()
{
int A, B;
cin >> A >> B;
cout << (A*B - min(A,B)) << '\n';
return 0;
}#include <bits/stdc++.h>
using namespace std;
int main()
{
int A, B;
cin >> A >> B;
cout << (A*B - min(A,B)) << '\n';
return 0;
}