spoj biased

#include<iostream>
#include<cstring>
#define ll long long
using namespace std;

int abss(ll i,ll j)
{
    if(i-j>0)
    {
        return i-j;
    }
    else 
    {
        return j-i;
    }
    
}
int main()
{   ll t;
    cin>>t;
    while(t--)
    {  ll n,rank;
       cin>>n;
        ll arr[n+1]={0};
       string name;
        
        for(ll i=1;i<=n;i++)
        {
            cin>>name>>rank;
            arr[rank]++;
        }
        ll actual_rank=1;
        ll  sum=0;
        for(ll i=1;i<=n;i++)
        {
             while(arr[i])
             {
                 sum+=abss(actual_rank,i);
                 arr[i]--;
                 actual_rank++;
             }
        }
        cout<<sum<<endl;
    }
    return 0;
}