#include<bits/stdc++.h>
using namespace std;
int main()
{
	int a,b,i,g;
	for(i=1000;i<=9999;i++){
		a=i/100;
		b=i%100;
		if((a+b)*(a+b)==i)
		cout<<(a+b)*(a+b)<<endl;
	}
return 0;

}
/**************************************************************
	Problem: 1085
	User: houshanglin
	Language: C++
	Result: Accepted
	Time:5 ms
	Memory:2072 kb
****************************************************************/