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>

int main(void){
  int A, B;
  scanf("%d %d", &A, &B);
  
  int cnt = 0;
  for (int i = A; i <= B; i++) {
    int a, b, c, d, e;
    a = i/10000;
    b = (i/1000)%10;
    c = (i/100)%10;
    d = (i/10)%10;
    e = i%10;
    if (a == e && b == d) cnt++;
  }
  
  printf("%d", cnt);
  
  return 0;
}