#include<bits/stdc++.h>
using namespace std;
int main(){
    int i,n,a;
    for(i=100;i<=999;i++){
        n=i/100;
        a=i%10;
        if(n==a) cout<<i<<endl;
    }
     
    return 0;
}
/**************************************************************
	Problem: 1701
	User: zhangyilei
	Language: C++
	Result: Accepted
	Time:13 ms
	Memory:2072 kb
****************************************************************/