Problem:
Score : 200 points

Problem Statement

Find the number of palindromic numbers among the integers between A and B (inclusive).
Here, a palindromic number is a positive integer whose string representation in base 10 (without leading zeros) reads the same forward and backward.

Constraints

10000 \leq A \leq B \leq 99999

All input values are integers.

Input

Input is given from Standard Input in the following format:

A B

Output

Print the number of palindromic numbers among the integers between A and B (inclusive).

Sample Input 1

11009 11332

Sample Output 1

4

There are four integers that satisfy the conditions: 11011, 11111, 11211 and 11311.

Sample Input 2

31415 92653

Sample Output 2

612

Solution in C (GCC 5.4.1) (judge verdict: Accepted)

#include <stdio.h>
#include <math.h>


int main(void){
  int A, B;
  scanf("%d%d", &A, &B);
  int count = 0;

  int i;

  for (i = A; i <= B; i++) {
    int s = i % 10;
    int t = i / 10000 % 10;
    int u = i / 10 % 10;
    int v = i / 1000 % 10;

    if (s==t && u==v) {
      count++;
    }
  }

  printf("%d\n", count);

}