175c.cpp

/*              |\ | |  ||\ \ /(_~     |~)|_~|\/||_~|\/||~)|_~|~)
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*/
#include <bits/stdc++.h>
using namespace std;

#define fastio                    \
    ios_base::sync_with_stdio(0); \
    cin.tie(0)
#define LL long long
#define mod 1000000007
#define all(v) v.begin(), v.end()
#define pr(v) pair<v, v>
#define pb push_back
#define FOR(i, j, k) for (auto i = j; i < k; i++)
#define ROF(i, j, k) for (auto i = j; i >= k; i--)
#define debug(...) fprintf(stderr, __VA_ARGS__), fflush(stderr)
#define time__(d) for (long blockTime = 0; (blockTime == 0 ? (blockTime = clock()) != 0 : false); debug("%s time : %.4fs", d, (double)(clock() - blockTime) / CLOCKS_PER_SEC))

const long long INF = 1e18;
const long long MAX = 2e5 + 10;
bool isPallindrome(string s)
{
    int l = 0;
    int h = s.size() - 1;

    while (h > l)
    {
        if (s[l++] != s[h--])
        {
            return 0;
        }
    }
    return 1;
}

int main()
{
    fastio;
    int t = 1; //cin>>t;
    while (t--)
    {
        int n1, n2;
        cin >> n1 >> n2;
        int ans = 0;
        FOR(i, n1, n2 + 1)
        {
            string s;
            s = to_string(i);
            FOR(j, 0, 24)
            {
                string p = s;
                if (j / 10 == 0)
                    p += '0' + to_string(j);
                else
                    p += to_string(j);
                FOR(k, 0, 60)
                {
                    string q = p;
                    if (k / 10 == 0)
                        q += '0' + to_string(k);
                    else
                        q += to_string(k);
                    FOR(l, 0, 60)
                    {
                        string r = q;
                        if (l / 10 == 0)
                            r += '0' + to_string(l);
                        else
                            r += to_string(l);
                        if (isPallindrome(r))
                            ans++; //cout<<r<<" ";
                    }
                }
            }
        }
        cout << ans;
    }
}