Untitled

#include <iostream>
#include <math.h>
#include <cmath>
using namespace std ;

int main()
{
    int sum = 0;
    int a, b;
    int z1, z2;
    cin >> a;
    cin >> b;
    for (int i = a; i <= b; i++) {
        z1 = i % 10;
        z2 = (i % 100)/10; 
        if (z1 == z2) {
        sum += 1;
    }
    }
   
    cout << sum;
}