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#include "aoc.h"
namespace aoc2021 {
std::pair<int, int> day2(line_view file) {
meters m1{0, 0};
meters m2{0, 0};
int aim{0};
per_line(file, [&m1, &m2, &aim](line_view lv) {
m1.apply(lv);
m2.apply(lv, &aim);
return true;
});
return {m1.depth * m1.horizontal, m2.depth * m2.horizontal};
}
} // namespace aoc2021
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