Problem:
Score : 100 points

Problem Statement

Takahashi is meeting up with Aoki.

They have planned to meet at a place that is D meters away from Takahashi's house in T minutes from now.

Takahashi will leave his house now and go straight to the place at a speed of S meters per minute.

Will he arrive in time?

Constraints

1 \leq D \leq 10000

1 \leq T \leq 10000

1 \leq S \leq 10000

All values in input are integers.

Input

Input is given from Standard Input in the following format:

D T S

Output

If Takahashi will reach the place in time, print Yes; otherwise, print No.

Sample Input 1

1000 15 80

Sample Output 1

Yes

It takes 12.5 minutes to go 1000 meters to the place at a speed of 80 meters per minute. They have planned to meet in 15 minutes so he will arrive in time.

Sample Input 2

2000 20 100

Sample Output 2

Yes

It takes 20 minutes to go 2000 meters to the place at a speed of 100 meters per minute. They have planned to meet in 20 minutes so he will arrive just on time.

Sample Input 3

10000 1 1

Sample Output 3

No

He will be late.

Solution in C# (.NET Core 3.1.201) (judge verdict: Accepted)

using System;
using System.ComponentModel.DataAnnotations;
using System.Runtime.InteropServices;

namespace ConsoleApp2
{
	class Program
	{
		static void Main(string[] args)
		{

			var abc = Console.ReadLine().Split();
			var a = int.Parse(abc[0]);
			var b = int.Parse(abc[1]);
			var c = int.Parse(abc[2]);

			var x = (a + c - 1) / c;

			if (x <= b)
			{
				Console.WriteLine("Yes");
			}
			else
			{
				Console.WriteLine("No");
			}
		}
	}
}