Problem:
Score : 100 points

Problem Statement

How many multiples of d are there among the integers between L and R (inclusive)?

Constraints

All values in input are integers.

1 \leq L \leq R \leq 100

1 \leq d \leq 100

Input

Input is given from Standard Input in the following format:

L R d

Output

Print the number of multiples of d among the integers between L and R (inclusive).

Sample Input 1

5 10 2

Sample Output 1

3

Among the integers between 5 and 10, there are three multiples of 2: 6, 8, and 10.

Sample Input 2

6 20 7

Sample Output 2

2

Among the integers between 6 and 20, there are two multiples of 7: 7 and 14.

Sample Input 3

1 100 1

Sample Output 3

100

Solution in C# (.NET Core 3.1.201) (judge verdict: Wrong Answer)

using System;

namespace _20200711_A
{
    class Program
    {
        static void Main(string[] args)
        {
            int L, R, n;
            string input;

            input = System.Console.ReadLine();
            L = int.Parse(input.Split(' ')[0]);
            R = int.Parse(input.Split(' ')[1]);
            n = int.Parse(input.Split(' ')[2]);


            Console.WriteLine(((R / n) + (L / n)).ToString());
        }
    }
}