#include<bits/stdc++.h>
using namespace std;
int main(){
	int a,b,c;
	cin>>a>>b>>c;
	if(pow(a,2)+pow(b,2)==pow(c,2)){
		cout<<pow(c,2);
	}
	else{
		if(min(a,b)==a&&min(a,c)==a){
			cout<<pow(b,2)+pow(c,2);
		}
		else if(min(a,b)==b&&min(b,c)==b){
			cout<<pow(a,2)+pow(c,2);
		}
		else if(min(a,c)==c&&min(b,c)==c){
			cout<<pow(a,2)+pow(b,2);
		}
	}
}