codechef - coronavirous spread

#include<bits/stdc++.h>
using namespace std;
#define fastread()(ios_base::sync_with_stdio(false),cin.tie(NULL));
#define ll long long
int main()
{
    fastread()
    ll t;
    cin>>t;
    while(t--)
    {
        ll n,cnt, mn, mx, i;
        cin>>n;
        ll ara[n+1];
        for(i=0; i<n; i++)
            cin>>ara[i];
        sort(ara,ara+n);
        mx=0,mn=1e9,cnt=0;
        for(i=0; i<n-1; i++)
        {
            if(abs(ara[i]-ara[i+1])<3)
            {
                cnt++;
            }
            else
            {
                mn=min(cnt,mn);
                mx=max(mx,cnt);
                cnt = 0;
            }
        }
        mn=min(cnt,mn);
        mx=max(mx,cnt);
        cout<<mn+1<<" "<<mx+1<<endl;
    }
}