#include<bits/stdc++.h>
using namespace std;
int main(){
	int a,b,i=1000;
	for(i;i<=9999;i++){
		a=i%100;
		b=i/100;
		if((a+b)*(a+b)==i){
			cout<<i<<endl;
		}	
	}
}
/**************************************************************
	Problem: 1085
	User: panyuchen
	Language: C++
	Result: Accepted
	Time:4 ms
	Memory:2072 kb
****************************************************************/