abb是派大星

#include<iostream>
using namespace std;
int main() {
    long long l,r;
    cin>>l>>r;
    int ans=0;
    for (long long x=l;x<=r;x++) {
        if(x<1000) continue;
        long long t=x;
        int len=0;
        while(t>0){
            len++;
            t/=10;
        }
        if(len%2!=0) continue;
       int p=x%100;
        int a=p/10;
        int b=p%10; 
        if (a==b) continue;
        if (a==0) continue;
        t=x;
        bool ok=true;
        while(t>0) {
            if(t%100!=p) {
                ok=false;
                break;
            }
            t/=100;
        }

        if(ok){
            ans++;
        }
    }
    cout<<ans<<endl;
    return 0;
}