#include<bits/stdc++.h>
using namespace std;
int main(){
    int a,b;
    cin>>a>>b;
    if(a>b){
    	cout<<a*a-a*b<<endl;
	}else{
		cout<<b*b-a*b<<endl;
	}
    
}
/**************************************************************
	Problem: 1324
	User: admin
	Language: C++
	Result: Accepted
	Time:8 ms
	Memory:2072 kb
****************************************************************/