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 Java (OpenJDK 1.8.0) (judge verdict: Accepted)

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.*;

public class Main
{
	private static void solve(FastScanner fr) {
		int d = fr.nextInt();
		int t = fr.nextInt();
		int s = fr.nextInt();

		sout(s*t>=d?"Yes":"No");
	}
    public static void main(String[] args) {
		FastScanner fs = new FastScanner();
		int n = 1;
		// int n = fs.nextInt();
		while (n-- > 0)	{
			solve(fs);
        }
    }

    private static void sout()          { System.out.println();  }
    private static void sout(String s)  { System.out.println(s); }
    private static void sout(int s)     { System.out.println(s); }
    private static void sout(long s)    { System.out.println(s); }
    private static void sout(double s)  { System.out.println(s); }
    
	static class FastScanner {
		BufferedReader br=new BufferedReader(new InputStreamReader(System.in));
		StringTokenizer st=new StringTokenizer("");
		String next() {
			while (!st.hasMoreTokens())
				try { st=new StringTokenizer(br.readLine()); } catch (IOException e) { e.printStackTrace(); }
			return st.nextToken();
		}
		int[] readArray(int n) {
			int[] a=new int[n];
			for (int i=0; i<n; i++) a[i]=nextInt();
			return a;
		}
		int nextInt() {	return Integer.parseInt(next()); }
		long nextLong() { return Long.parseLong(next()); }
		double nextDouble() { return Double.parseDouble(next()); }
	}
}