#include<bits/stdc++.h>
using namespace std;
int main(){
	int a,b,c=100;
	while(c<=999){
		b=c%10;
		a=c/100;
	if(a==b){
		cout<<c<<endl;
		}
		c++;
	}
}
/**************************************************************
	Problem: 1701
	User: toughuatao1
	Language: C++
	Result: Accepted
	Time:13 ms
	Memory:2072 kb
****************************************************************/