WEEK 2 SHEET G FCIS division

الكود:

#include <stdio.h>
#include <iostream>
#include <algorithm>
#include <bits/stdc++.h>
using namespace std;
int main()
{//(*it).first in map>>>
 int a = 5 ,x,z=0,y=1,h=0,u,s=0,o;
 cin>>x;
if (x==1)
    cout<<"LAB B";
else
    { for (int i=2 ;i<x;i++)
 {
     if (x%i==0)
     {
         z=1;
         break;
     }
 }
 if (z==1)
    cout<<"LAB B";
 else //3613
 {o=x;
     for (int i=0;o!=0;i++)
     {   u=o%10;
         o=o/10;
         s=(u+s)*10;
        // y=y*10;
         //cout<<" u "<<u<<endl<<"o "<<o<<endl;
     }s=s/10;
     if (s==x)
     {
         cout<<"LAB A";
     }
     else
     {
       for (int i=2 ;i<s;i++)
 {
     if (s%i==0)
     {
         h=1;
         break;
     }
 }
 if (h==0)
    cout<<"LAB C" ;
 else
    cout<< "LAB A";
     }
 }}//cout<<"y "<<s;}
     return 0;
}


G. FCIS division
time limit per test
2 seconds
memory limit per test
64 megabytes
input
standard input
output
standard output
People in FCIS want to divide the students into 3 labs. They wrote some numbers on papers, then every student withdraws a paper. A student would be in some lab depending on his number.
LAB A:
- If the number is prime and it’s reverse is not prime.
- If the number is prime and it equals its reverse.
LAB B:
- If the number is not prime.
LAB C:
- If the number and its reverse are primes and they are different (17 and 71).
Input
You will be given one number N(1  ≤  N  ≤  10⁶) the number on the paper.
Output
You are asked to print "LAB A", "LAB B" or "LAB C" without the quotes depending on the number N.

Examples
Input
17
Output
LAB C
Input
18
Output
LAB B
Input
19
Output
LAB A