#include<bits/stdc++.h> using namespace std; int main(){ int n; cin>>n; for(int i=1;i<=n;i++){ int x=0; int s=i; while(s>0){ x=x*10+s%10; s=s/10; } if(x==i){ cout<<i<<endl; } } return 0; }

#include <bits/stdc++.h> using namespace std; int main(){ int n; cin>>n; for (int i = 1; i <= n; ++i) { int x = 0; int s = i; while(s>0){ x = x*10+s%10; s = s/10; }if(x==i){ cout<<i<<endl; } } return 0; }

#include<bits/stdc++.h> using namespace std; int main(){ int n; cin>>n; for(int i=1;i<=n;i++){ int x=0; int t=i; while(t){ x=x*10+t%10; t/=10; } if(x==i)cout<<i<<endl; } return 0; }

#include<bits/stdc++.h> using namespace std; bool func(int x){ string s = to_string(x); string rev_s = s; reverse(s.begin(),s.end()); return rev_s == s; } int main(){ int n; cin >> n; for(int i = 1;i <= n;i++){ if(func(i))cout << i << endl; } return 0; }