Problem : This is last round problem C.

#include<bits/stdc++.h>
using namespace std;
typedef long long int ll;
ll mod = 1e9+7;
 
int main()
{
 ios_base::sync_with_stdio(false);
 cin.tie(0);cout.tie(0);
 
 ll t;
 cin >> t;
 while(t--){
 ll n, m;
 cin >> n >> m;
 vector<ll>arr1(n);
 for(ll i = 0;i<n;i++)cin >> arr1[i];
 ll z;
 cin >> z;
 vector<ll>arr2(z);
 for(ll i = 0;i<z;i++)cin >> arr2[i];
 map<ll, ll>mp1, mp2;

 for(ll i = 0;i<n;i++){
    ll x = arr1[i];
    ll cnt = 1;
    while(x % m == 0){
         x = x * 1ll / m * 1ll;
         cnt = cnt * m * 1ll;
    }
    mp1[x] += cnt;
 }

 for(ll i = 0;i<z;i++){
    ll x = arr2[i];
    ll cnt = 1;
    while(x % m == 0){
        x = x * 1ll / m * 1ll;
        cnt = cnt * m * 1ll;;
    }
    mp2[x] += cnt;
 }

 if(mp1 == mp2){
    cout << "Yes" << endl;
 }
 else cout << "No" << endl;
  
 }
}

What will be your advice to newbie's and pupil's to do better at competitive coding which helped you a lot at that stage.

Can anyone tell me how to include this micro #define int long long int, this is giving error because its also converting int main to long long int main

Which type of problems to practice to able to solve this type of problems, got stuck in this problem.