Problem B
Deterministic Finite Automata - Complement
Languages
en
is
You are given a deterministic finite automaton that accepts the language $\mathcal{L}$ You should output the complement, a deterministic finite automaton that accepts the language $\overline{\mathcal{L}}$.
Input
The first line of inputs contains two positive integers $n$, $c$, $s$, and $f$, where $n$ is the number of states, $c$ is the size of the alphabet, $s$ is the initial state, and $f$ is the number of final states. The second line consists of a string $\Sigma = \Sigma _1\Sigma _2\dots \Sigma _c$ of $c$ distinct symbols, each of which is a lowercase english character. The third line consists of $f$ distinct positive integers, the set of final states. Then $n$ lines follow, each with $c$ positive integers, describing the symbol table. The $j$-th integer on the $i$-th of those lines represents the state transitioned to from state $i$ upon reading $\Sigma _j$.
Each state is an integer between $1$ and $n$. It is guaranteed that $n \cdot c \leq 100\, 022$, $1 \leq s \leq n$, and $0 \leq f \leq n$.
Output
Output any deterministic finite automaton representing the complement of the input automaton. Your output is subject to the same format and restrictions as the input.
Sample Input 1 | Sample Output 1 |
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3 2 1 1 ab 1 1 2 1 3 3 3 |
4 2 1 3 ab 2 3 4 1 2 1 3 3 4 4 3 |
Sample Input 2 | Sample Output 2 |
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1 4 1 0 acgt 1 1 1 1 |
1 4 1 1 acgt 1 1 1 1 1 |