题解

#include<iostream>
using namespace std;
int main(){
    int n;
    cin>>n;
    for(int i=1;i<=n;i++){
		int x=0,s=i;
		while(s>0){
			x*=10;  
            x+=s%10;
			s/=10;        
        }
        if(x==i){
			cout<<i<<"\n";
		}
	} 
    return 0;
}