#include<bits/stdc++.h>
using namespace std;
int main(){
	for (int n=100;n<1000; n++){
		int g=n%10;
		int b=n/100;
		if(g==b){
			cout<<n<<endl;
		}
	}
}
/**************************************************************
	Problem: 1701
	User: xiaojingxuan
	Language: C++
	Result: Accepted
	Time:14 ms
	Memory:2072 kb
****************************************************************/