#include <iostream> #include <string> using namespace std; bool re (int n) { int a[7]; for (int i = 0; i < 7; i++) a[i] = 0; int j = 0; while(n/10!=0) { a[j++] = n%10; n /= 10; } a[j] = n; for (int i = 0; i <= j; i++, j--) { if (a[i]!=a[j]) return false; } return true; } int main() { int n; cin >> n; int tmp; for (int i = 1; i <= n; i++) if(re(i)) cout << i << endl; return 0; }