Pacman

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Pacman is a software package manager. It has a repository of **N** softwares numbered from **1** to **N**. A software may have a dependency on another software. Fortunately, each software has **at most 1 dependency**. In order to install a software, we must first install its dependency (if any). Pacman ensures that there are **no cyclic dependencies** among softwares. **For example**, if softwar

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solution.cppC++17

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