#include <bits/stdc++.h>
using namespace std;
bool ss(int n){
	int t,a[9],s=0,i;
	while(n!=0){
		t=n%10;
		for(i=0;i<s;i++){
			if(a[i]==t)
				return 0;
		}
		a[i]=t;
		n/=10;
		s++;
	}
	return 1;
}
int main(){
	int n,m,i;
	cin>>n>>m;
	for(i=n;i<=m;i++){
		if(ss(i*i))
			cout<<i<<endl;
	}
	return 0;
	}

/**************************************************************
	Problem: 1118
	User: fzy001
	Language: C++
	Result: Accepted
	Time:8 ms
	Memory:2072 kb
****************************************************************/