Problem:
Score : 100 points

Problem Statement

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?

Constraints

All values in input are integers.

1 \leq K \leq N \leq 50

Input

Input is given from Standard Input in the following format:

N K

Output

Print the answer.

Sample Input 1

3 2

Sample Output 1

2

There are two ways to choose two consecutive integers: (1,2) and (2,3).

Sample Input 2

13 3

Sample Output 2

11

Solution in C (GCC 5.4.1) (judge verdict: Accepted)

#include<stdio.h>
int main()
{
    int N, K;
    // 整数の入力
    scanf("%d", &N);
    scanf("%d", &K);

    printf("%d\n", N-(K-1));
/*
    // スペース区切りの整数の入力
    scanf("%d %d",&b,&c);
    // 文字列の入力
    scanf("%s",s);
    // 出力
    printf("%d %s\n",a+b+c,s);
*/
    return 0;
}