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++ (Clang 10.0.0) (judge verdict: Accepted)

#include <iostream>
#include <vector>
#include <set>
#include <queue>
#include <stack>
#include <map>
#include <limits>
#include <string>
#include <algorithm>
#include <bitset>
#include <unordered_set>
#include <unordered_map>
#include <map>
#include "math.h"
#include "assert.h"

using namespace std;

#define ll long long

#define buff ios::sync_with_stdio(false)
#define epsilon 1e-07
#define pi 2 * acos(0.0);
#define mod 1000000007   // 1e9+7
#define cerr if(false)cerr
#define watch(x) cerr << #x << " = " << x << endl;

#define xy pair<int, int>
#define x first
#define y second 

#define inf std::numeric_limits<int>().max()

int main() {
	int d, t, s;
	cin >> d >> t >> s;
	if (s*t >= d) cout << "Yes" << endl;
	else cout << "No" << endl;
}