#include<bits/stdc++.h>
using namespace std;
int main(){
    int x,y,i,j,z,s,c;
    char a[8];
    cin>>x>>y;
    for(i=x;i<=y;i++){
        c=0;
        s=i*i;
        sprintf(a,"%d",s);
        for(j=0;j<6;j++){
            for(z=j+1;z<7;z++) if(a[j]==a[z]){
                    c++;
                    break; 
            }       
        }
        if(c==0) cout<<i<<endl;
    }
}
/**************************************************************
	Problem: 1118
	User: wengzihang
	Language: C++
	Result: Accepted
	Time:6 ms
	Memory:2072 kb
****************************************************************/