题解

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