#include<bits/stdc++.h>
using namespace std;
int main(){
	
	int i,n,p;
	for(i=100;i<=999;i++){
		n=i/100;
		p=i%10;
		if(n==p) cout<<i<<endl;
	}
	
	return 0;
}
/**************************************************************
	Problem: 1701
	User: huangyaojie3
	Language: C++
	Result: Accepted
	Time:7 ms
	Memory:2072 kb
****************************************************************/