#include <stdio.h>
void main()
{
	int m,n,a;
	scanf("%d%d",&m,&n);
	if(m>n){
		a=(m-n)*m;
	}else{
		a=(n-m)*n;
	}
	printf("%d",a);
}
/**************************************************************
	Problem: 1324
	User: admin
	Language: C
	Result: Accepted
	Time:8 ms
	Memory:1144 kb
****************************************************************/