Given an integer $n$ in binary representation, convert it to decimal representation.
### Input
- A single line contains an integer $n$ in binary representation.
### Output
- Print the decimal representation of $n$.
### Constraints
- It is guaranteed that the decimal representation of $n$ is a positive integer that does not exceed $2^{31}-1$.
### Example
Input:
```
110
```
Output:
```
6
```
