Score : 100 points
Snuke has N integers: 1,2,\ldots,N. He will choose K of them and give those to Takahashi.
How many ways are there to choose K consecutive integers?
Input is given from Standard Input in the following format:
N K
Print the answer.
3 2
2
There are two ways to choose two consecutive integers: (1,2) and (2,3).
13 3
11