#include<bits/stdc++.h>
using namespace std;
int main()
{
	for(int i=32;i<100;i++)
	{
		int t=i*i;
		int d=t%10;
		int c=t/10%10;
		int b=t/100%10;
		int a=t/1000;
		if(a==b&&c==d)
		{
			cout<<t;
		}	
	}
	return 0;
}
/**************************************************************
	Problem: 1092
	User: wangyuxin
	Language: C++
	Result: Accepted
	Time:4 ms
	Memory:2072 kb
****************************************************************/