八十分代码求助大佬

// luogu-judger-enable-o2
#include<iostream>
#include<cstdio>
using namespace std;
int main()
{
    long long n,m,i;
    int a,b,c,x,y,z,j,k;
    int sb1,sb2,ans=0;
    int s[1005];
    cin>>n>>m;
    for(i=n;i<=m;i++)
    {
        a=i/10000000;
        b=i/1000000%10;
        c=i/100000%10;
        x=i/10000%10;
        y=i/1000%10;
        z=i/100%10;
        j=i/10%10;
        k=i%10;
        sb1=10*y+z;
        sb2=10*j+k;
        if(a==k&&b==j&&c==z&&x==y&&sb1<=12&&sb1>=1&&sb2<=31&&sb2>=1) ans++;

    }
    cout<<ans;

}