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

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