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Prevent unnecessary copy

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Bert Peters
2019-12-15 18:25:28 +01:00
parent 55f39d896f
commit 1d0fae267b
1 changed files with 1 additions and 1 deletions
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2019/src/day15.cpp
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@@ -145,7 +145,7 @@ void aoc2019::day15_part1(std::istream &input, std::ostream &output) {
void aoc2019::day15_part2(std::istream &input, std::ostream &output) {
const auto map = read_map(input);
auto starting_point = std::find_if(map.begin(), map.end(), [](auto x) { return x.second == Tile::Oxygen; })->first;
auto starting_point = std::find_if(map.begin(), map.end(), [](auto &x) { return x.second == Tile::Oxygen; })->first;
auto dist = bfs(map, starting_point, [](Tile x) { return false; });