## Doubt Support Availability solution codechef

On the CodeChef Practice page, problems with difficulty $\leq 1600$ now have Doubt Support — you can go to the problem page and get your queries answered by an experienced CodeChef Doubt Solver through the “Doubt Support” tab.

Given the difficulty of a problem, output whether this problem has Doubt Support or not.

### Input Format

Doubt Support Availability solution codechef

The input consists of a single integer, $D$, which is the difficulty of the problem.

### Output Format

## Doubt Support Availability solution codechef

Doubt Support Availability solution codechef

Output `Yes`

if the problem has Doubt Support, or `No`

if it doesn’t.

Each letter of the output may be printed in either lowercase or uppercase. For example, the strings `yes`

, `YeS`

, and `YES`

will all be treated as equivalent.

### Constraints

- $1 \leq D \leq 5000$

### Sample Input 1

```
800
```

### Sample Output 1

```
Yes
```

### Explanation

## Doubt Support Availability solution codechef

$800 \leq 1600$. Hence, this problem has Doubt Support.

### Sample Input 2

```
1600
```

### Sample Output 2

```
Yes
```

### Explanation

$1600 \leq 1600$. Hence, this problem has Doubt Support.

### Sample Input 3

```
1601
```

### Sample Output 3

```
No
```

### Explanation

## Doubt Support Availability solution codechef

$1601 \nleq 1600$. Hence, this problem does not have Doubt Support.

### Sample Input 4

```
5000
```

### Sample Output 4

```
No
```

### Explanation

## Doubt Support Availability solution codechef

$5000 \nleq 1600$. Hence, this problem does not have Doubt Support.