#include<bits/stdc++.h>
using namespace std;
int n=100,g,b;
int main(){
    while(n<1000){
    	g=n%10;
    	b=n/100;
    	if(g==b){
    		cout<<n<<endl;
    	}
		n++;
    }
return 0;
}

/**************************************************************
	Problem: 1701
	User: chenzelin
	Language: C++
	Result: Accepted
	Time:14 ms
	Memory:2072 kb
****************************************************************/