AtCoder Beginner Contest 190
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Problem Statement
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How many arithmetic progressions consisting of integers with a common difference of $1$ have a sum of $N$?
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Constraints
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$1 ≤ N ≤ 10^{12}$$N$is an integer.
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Input
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Input is given from Standard Input in the following format:
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N翻译中…
Output
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Print the answer.
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样例
Input #1
12
Output #1
4
We have four such progressions:
- $[12]$
- $[3, 4, 5]$
- $[-2, -1, 0, 1, 2, 3, 4, 5]$
- $[-11, -10, -9, \dots, 10, 11, 12]$
Input #2
1
Output #2
2
We have two such progressions:
- $[1]$
- $[0, 1]$
Input #3
963761198400
Output #3
1920
题目信息
题面与样例版权归 AtCoder 及出题人所有；中文翻译由 AI 生成（CI 管线），如有出入请以原文为准。