# include<iostream> # include<cstring> using namespace std; int main() { int user,number = 0,y = 0,temp = 0; cin>>user; for(int n=1;n<=user;n++){ //TODO temp = n; number = 0; while(n != 0){ //TODO y = temp%10; } number = number * 10 + y; temp = temp / 10; } if(n == number){ //TODO cout<<number<<endl; } }