#include<bits/stdc++.h>
using namespace std;
int main(){
	int b,d,n,i=1000;
	for(;i<=1000;i+1){
		b=i%100;
		d=i/100;
		n=(d+b)*(d+b);
		if(n==i){
			cout<<i<<endl;	
		}
		
	}
} 

/**************************************************************
	Problem: 1085
	User: caiqiaoxi
	Language: C++
	Result: Time Limit Exceed
****************************************************************/