Enough Buses

Difficulty: 900 2000 ms 128 MB

math

N people must travel; each bus seats S. Print the minimum number of buses.

Input: one line with two integers N and S.

Output: ⌈N/S⌉.

Constraints:

• 1 ≤ N ≤ 10¹⁸
• 1 ≤ S ≤ 10⁹

Sample Tests

45 40

2

40 40

1

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