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#![feature(test)] | ||
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use rustc_hash::FxHashMap; | ||
use rustworkx_core::{ | ||
connectivity::stoer_wagner_min_cut, | ||
petgraph::{Graph, Undirected}, | ||
}; | ||
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type Input = Graph<(), (), Undirected, u16>; | ||
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fn setup(input: &str) -> Input { | ||
let mut graph = Graph::default(); | ||
let mut nodes = FxHashMap::default(); | ||
for line in input.lines() { | ||
let p = *nodes | ||
.entry(line.split(':').next().unwrap()) | ||
.or_insert_with(|| graph.add_node(())); | ||
for q in line.split_whitespace().skip(1) { | ||
let q = *nodes.entry(q).or_insert_with(|| graph.add_node(())); | ||
graph.add_edge(p, q, ()); | ||
} | ||
} | ||
graph | ||
} | ||
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fn part1(input: &Input) -> usize { | ||
let x = stoer_wagner_min_cut(input, |_| Ok::<_, ()>(1)) | ||
.unwrap() | ||
.unwrap() | ||
.1 | ||
.len(); | ||
x * (input.node_count() - x) | ||
} | ||
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aoc::main!(2023, 25, ex: 1); |
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jqt: rhn xhk nvd | ||
rsh: frs pzl lsr | ||
xhk: hfx | ||
cmg: qnr nvd lhk bvb | ||
rhn: xhk bvb hfx | ||
bvb: xhk hfx | ||
pzl: lsr hfx nvd | ||
qnr: nvd | ||
ntq: jqt hfx bvb xhk | ||
nvd: lhk | ||
lsr: lhk | ||
rzs: qnr cmg lsr rsh | ||
frs: qnr lhk lsr |
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54 |
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@@ -35,6 +35,7 @@ | |
pyperclip | ||
requests | ||
beautifulsoup4 | ||
networkx | ||
sympy | ||
]); | ||
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