Algorithms

Fonction f(a: entier, b: entier): integer
var r, z: integer
Begin
r <-- 0
z <-- 1

while(a != 0)
  r <-- r + (a mod 10) * z
  z <-- z * b
  a <-- a div 10
endWhile

return r
End

I want to ask one general question here, We have seen 32 bit and 64 bit Operating System.
Is there any other larger size bit Operating System exist? If yes can you please share the link to download it.?   i  want the best speed operating system.

Below is the link to the problem and my code. I could only pass case 1 with my code. And other cases are showing wrong answers. It would be of great help if anyone could identify the errors in my code.

#include<bits/stdc++.h>

using namespace std;

vector<long long int>freq(1000000,0);

void merge(vector<long long int>&v,long long int low,long long int mid,long long int high)
{
    long long int count=0;
    long long int i = low,j = mid+1,k=0;
    vector<long long int>temp(high-low+1);
    for(long long int p=low;p<=high;p++)
    {
        if(i>mid)
        {
            temp[k++] = v[j++];
        }
        else if(j>high)
        {
            temp[k++] = v[i];
            freq[v[i]]+=count;
            i++;
        }
        else if(v[i]<=v[j])
        {
            temp[k++] = v[i];
            freq[v[i]]+=count;
            i++;
        }
        else
        {
            temp[k++] = v[j++];
            count++;
        }
    }
    
    
    for(long long int p = 0;p<k;p++)
    {
        v[low+p] = temp[p];
    }
}

void merge_sort(vector<long long int>&v,long long int low,long long int high)
{
    if(low>=high)
    {
        return;
    }
    long long int mid = (low+high)/2;
    merge_sort(v,low,mid);
    merge_sort(v,mid+1,high);
    merge(v,low,mid,high);
}

int main()
{
    long long int t;
    cin>>t;
    while(t--)
    {
        long long int n,x;
        cin>>n;
        vector<long long int> v;
        for(long long int i=0;i<n;i++)
        {
            cin>>x;
            v.push_back(x);
        }
        vector<long long int>w = v;
        merge_sort(v,0,n-1);
        for(long long int i=0;i<n;i++)
        {
            cout<<freq[w[i]]<<" ";
        }
        cout<<endl;
    }
}