int hackerlandRadioTransmitters(vector<int> x, int k) {
    sort(x.begin(),x.end());
    int count=0;
    int lastTransmittersMinCoverRange = INT_MIN;
    int lastTransmittersMaxCoverRange = INT_MIN;
    for(int n:x)
    {
        if (n>lastTransmittersMaxCoverRange)
        {
            count++;
            lastTransmittersMinCoverRange = n;
            lastTransmittersMaxCoverRange = n+k;
        }
        else {
            if(lastTransmittersMinCoverRange>=n-k)
            {
                lastTransmittersMaxCoverRange = n+k;
            }
        }
    }
    return count;
}