```html
<div id="counter">100</div>

<script>
    function myFunction() {
        var person = prompt("Please enter One number (N) where (N) is a positive integer.", "");
        if (person != null) {
            document.getElementById("demo").innerHTML =
                "Hello " + person + "! How are you today?";
        }
    }
    function countdown() {
        var i = document.getElementById('counter');
        i.innerHTML = parseInt(i.innerHTML) - 1;
        if (parseInt(i.innerHTML) == 95) {
            clearInterval(timerId);
        }
    }
    var timerId = setInterval(function () { countdown(); }, 1000);
</script>

<p id="demo"></p>

```

Example Test Cases:

```
Input: 10      

Output:  
100 98 96 94 92
99 97 95 93 91

```

Another one:

```
Input: 5  

Output:
100 98 96     
99 97

```