AT_abc469_a [ABC469A] Train Car

There is a train consisting of $ N $ cars. What is the position, counted from the back, of the car that is $ K $ -th from the front of this train?

The input is given from Standard Input in the following format: > $ N $ $ K $

If the car is $ X $ -th from the back, output the integer $ X $ in one line.

### Sample Explanation 1 For a train consisting of five cars, the car that is second from the front is fourth from the back. ### Constraints - $ 1 \leq K \leq N \leq 100 $ - All input values are integers.