动态输入工具 - 题目

#11706. 动态输入工具

统计

AI Translation — This statement was translated using AI and may contain inaccuracies. Please refer to the original statement if in doubt.

CodingSlave 1.0 是一款全新的文本编辑器。在 CodingSlave 1.0 中，可以通过以下两种操作来构造字符串：

在当前字符串末尾添加一个字符。
选择当前字符串的一个非空子序列，并将其添加到当前字符串的末尾。

初始时，当前字符串为空。给定一个由小写英文字母组成的单词，计算构造该字符串所需的最少操作次数。

输入格式

第一行包含一个由小写英文字母组成的字符串 $S$ ($1 \le |S| \le 10^6$)。

输出格式

输出一个整数：使用 CodingSlave 1.0 构造 $S$ 所需的最少操作次数。

样例

样例输入 1

aaa

样例输出 1

样例输入 2

aabaaaabaa

样例输出 2

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