#include <bits/stdc++.h>
using namespace std;
int main(){
	int i,o;
	cin>>i>>o;
	for(int p=i;p<=o;p++){
		int u=p*p,h[7],q=0,l=1000000;
		bool aa=0;
		if(u>9999999)break;
		for(;q<7;q++)h[q]=u/l%10,l/=10;
		sort(h,h+7);
		for(int l=0;l<7;l++){
			if(h[l]==h[l+1]){
				aa=1;
				break;
			}
		}
		if(!aa)cout<<p<<"\n";
	}
	return 0;
}

/**************************************************************
	Problem: 1118
	User: zhouhongyi
	Language: C++
	Result: Wrong Answer
****************************************************************/