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authorkaiwu <kaiwu2004@gmail.com>2022-12-09 20:56:13 +0800
committerkaiwu <kaiwu2004@gmail.com>2022-12-09 20:56:13 +0800
commitb6f21bfd0261d9a286d51524a38f9d1a389b5f22 (patch)
tree6d0876388d61f7245b24a92565f191b34e8f80fa /src
parent4e11ee3c519376954ca3fc69067e14b28723f234 (diff)
downloadadvent-of-code-b6f21bfd0261d9a286d51524a38f9d1a389b5f22.tar.gz
advent-of-code-b6f21bfd0261d9a286d51524a38f9d1a389b5f22.zip
2022 day9
Diffstat (limited to 'src')
-rw-r--r--src/2022/day9/aoc.cpp10
1 files changed, 8 insertions, 2 deletions
diff --git a/src/2022/day9/aoc.cpp b/src/2022/day9/aoc.cpp
index 2748141..94e5a01 100644
--- a/src/2022/day9/aoc.cpp
+++ b/src/2022/day9/aoc.cpp
@@ -101,7 +101,13 @@ struct arena {
void follow(Co& t, Co& h) {
int dy = h.y - t.y;
int dx = h.x - t.x;
- printf("(%d,%d) -> (%d,%d) %d %d\n", t.x, t.y, h.x, h.y, dx, dy);
+ // printf("(%d,%d) -> (%d,%d) %d %d\n", t.x, t.y, h.x, h.y, dx, dy);
+ if (std::abs(dy) == 2 && std::abs(dx) == 2) {
+ t.x += dx / 2;
+ t.y += dy / 2;
+ return;
+ }
+
if (dy == 2) {
t.y += 1;
t.x += dx;
@@ -183,7 +189,7 @@ std::pair<int,int> day9(line_view file) {
an.reset();
an.travel_tails(ms);
int m2 = an.moves();
- return {m1, m2};
+ return {m1, m2 + 1};
}
}