Divisibility

1000ms

262144K

Description:

Find the number of k-divisible numbers on the segment [a, b]. In other words you need to find the number of such integer values x that a ≤ x ≤ b and x is divisible by k.

Input:

The only line contains three space-separated integers k, a and b (1 ≤ k ≤ 10¹⁸; - 10¹⁸ ≤ a ≤ b ≤ 10¹⁸).

Output:

Print the required number.

Sample Input:

1 1 10

Sample Output:

Sample Input:

2 -4 4

Sample Output:

Informação

Provedor Codeforces

Código CF597A