#include<iostream> #include<algorithm> using namespace std; int main(){ int a,b,c; cin>>a>>b>>c; if(b*b+c*c==a*a){ cout<<a*a; }else if(b*b+a*a==c*c){ cout<<c*c; }else if(a*a+c*c==b*b){ cout<<b*b; }else{ int d=max({ a*a+b*b, a*a+c*c, b*b+c*c }); cout<<d<<endl; } return 0; }