The Walking Dead

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The Zombies are attacking everyone. There are $N$ places numbered from $0$ to $N-1$. Place $0$ is the one and only safe zone here. There are certain zombie-infested places, from where you may never return. Once a person reaches the safe zone, they stay there. Each place (excluding the safe zone and dead zone) has one person in it. Each place is such that there is a fixed probability of where

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solution.cppC++17

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