#include<bits/stdc++.h>
using namespace std;
int main(){
	int i=1000,b,c,d;
	while(i<10000){
	    b=i%100;
	    c=i/100;
	    d=b+c;
	    if(d*d==i){
	    	cout<<i<<endl;
	    }
	    i++;
}
	    
	
}   

/**************************************************************
	Problem: 1085
	User: lvrenxiang
	Language: C++
	Result: Accepted
	Time:4 ms
	Memory:2072 kb
****************************************************************/