#include <iostream>
using namespace std;
int rSum(int j) {
int sum = 0;
while (j != 0) {
sum = sum * 10 + (j % 10);
j = j / 10;
}
return sum;
}
int main( ) {
int n, m, i;
cin >> n >> m;
for (i = n; i < m; i++)
if (i == rSum(i))
cout << i << ' ';
return 0;
}
输入：90 120
输出：____1_____
