#include<bits/stdc++.h>
using namespace std;
int main(){
	int a,c;
	for(int i=10;i<=1000;i++){
		if(i/100==0){
			a=i/10;
			c=i%10;
			if(a==c){
				cout<<i<<endl;
			} 
		} 
		else{
		a=i/100;
		c=i%10;
		if(a==c){
			cout<<i<<endl;
		}
		
	} 
}
    return 0;
}
/**************************************************************
	Problem: 1142
	User: panyuchen
	Language: C++
	Result: Wrong Answer
****************************************************************/