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 Kotlin (1.3.71) (judge verdict: Accepted)


fun main() {
  fun readInt():Int{ return readLine()!!.toInt()}
    fun readLong():Long{return readLine()!!.toLong()}
    fun readString():String{return readLine()!!}
    fun readIntList():List<Int>{return readLine()!!.split(" ").map { it.toInt() }}
    fun readLongList():List<Long>{return readLine()!!.split(" ").map { it.toLong() }}
    fun readStringList():List<String>{return readLine()!!.split(" ")}
    fun readIntLists(n: Int, sorted: Boolean=false):List<List<Int>>{return if(sorted){(0 until n).map { readIntList().sorted() }}else{(0 until n).map { readIntList()}}}
    fun readLongLists(n:Int, sorted: Boolean=false):List<List<Long>>{return if(sorted){(0 until n).map { readLongList().sorted() }}else{(0 until n).map { readLongList()}}}
    fun readStringLists(n:Int):List<List<String>>{return (0 until n).map { readStringList() }}

    val a=readIntList()
    if (a[0]<=a[1]*a[2]){
        println("Yes")}
    else{
        println("No")
    }
}