Time limit 2000/4000/4000/4000 ms. Memory limit 65000/65000/65000/65000 Kb.
Prepared by Ibrahim Mesecan.
Difficulty Alpha
Sum of the numbers from a to b
Question:
Write a program that calculates sum of the numbers from a to b with the steps of k.
Input specification
You will be given three integer numbers (a, b, k)
where 0 ≤ a < b ≤ 30000 and 0 < k ≤ 100.
Output specification
Show one integer (sum of the numbers from a to b with the steps k).
Sample Input I
21 24 1
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Sample Input II
237 1786 50
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Sample Output I
90
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Sample Output II
30597
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Для отправки решений необходимо выполнить вход.
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