#include<bits/stdc++.h>
using namespace std;
int main(){
	
	 for (int a = 1000; a < 10000; a++) {
        int b = a / 100;
        int c = a % 100;
        
       
        
        int d = b + c; 
        if (d* d == a) {
            cout << a << endl;
        }
    }
	return 0;
} 
/**************************************************************
	Problem: 1085
	User: cyp
	Language: C++
	Result: Accepted
	Time:3 ms
	Memory:2072 kb
****************************************************************/