Given an array $A$ of $n$ integers, we need to count the number of subarrays whose average is equal to $k$.
### Input
- The first line contains 2 integers $n, k$.
- The second line contains $n$ integers $A_i$.
### Output
- Print the number of subarray with average $k$.
### Constraints
- $1 \le n \le 10^5$.
- $|A_i| \le 10^6$.
- $|k| \le 10^6$, $k$ is an integer.
### Example
Input:
```
5 2
1 3 -2 3 -5
```
Output:
```
1
```
