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 11.0.6) (judge verdict: Accepted)

import java.util.*;
public class Main {
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
        int D = sc.nextInt();
        int T = sc.nextInt();
        int S = sc.nextInt();
    
        boolean result = (S*T >= D);

        if (result) {
            System.out.println("Yes");
        } else {
            System.out.println("No");
        }
    }
    
    private static boolean ableToMove(int t_old, int x_old, int y_old, int t_new, int x_new, int y_new) {
        int x_distance = (x_old > x_new) ? (x_old - x_new) : (x_new - x_old);
        int y_distance = (y_old > y_new) ? (y_old - y_new) : (y_new - y_old);
        int distance = x_distance + y_distance;

        int lapse = t_new - t_old;
        if (distance > lapse) {
            return false;
        }
        if ((lapse - distance) % 2 != 0) {
            return false;
        }
        return true;
    }
}