#include<bits/stdc++.h>
using namespace std;
int i=1000,ab,cd;
int main(){
	while(i<=9999){ 
		ab=i/100;
		cd=i%100;
		if((ab+cd)*(ab+cd)==i) cout<<i<<endl;
		i++;
	}
	return 0;
}
/**************************************************************
	Problem: 1085
	User: zhangziang
	Language: C++
	Result: Accepted
	Time:4 ms
	Memory:2072 kb
****************************************************************/