From 3dca1a46e107b7f76dc387906fab326e838a8f11 Mon Sep 17 00:00:00 2001
From: Bert Peters <bert@bertptrs.nl>
Date: Tue, 3 Dec 2019 18:27:17 +0100
Subject: [PATCH] Implement day 03.

---
 2019/src/day03.cpp            | 3 ++-
 2019/tests/samples/03-1-3.in  | 2 ++
 2019/tests/samples/03-1-3.out | 1 +
 2019/tests/samples/03-2-3.in  | 1 +
 2019/tests/samples/03-2-3.out | 1 +
 5 files changed, 7 insertions(+), 1 deletion(-)
 create mode 100644 2019/tests/samples/03-1-3.in
 create mode 100644 2019/tests/samples/03-1-3.out
 create mode 120000 2019/tests/samples/03-2-3.in
 create mode 100644 2019/tests/samples/03-2-3.out

diff --git a/2019/src/day03.cpp b/2019/src/day03.cpp
index 2d95c53..8fcc063 100644
--- a/2019/src/day03.cpp
+++ b/2019/src/day03.cpp
@@ -31,9 +31,10 @@ namespace {
             assert(amount > 0 && "Must have some valid direction");
 
             for (std::size_t i = 0; i < amount; ++i) {
+                ++steps;
                 pos += dir;
                 if (!points.count(pos)) {
-                    points[pos] = ++steps;
+                    points[pos] = steps;
                 }
             }
         }
diff --git a/2019/tests/samples/03-1-3.in b/2019/tests/samples/03-1-3.in
new file mode 100644
index 0000000..73b95a1
--- /dev/null
+++ b/2019/tests/samples/03-1-3.in
@@ -0,0 +1,2 @@
+R8,U5,L5,D3
+U7,R6,D4,L4
diff --git a/2019/tests/samples/03-1-3.out b/2019/tests/samples/03-1-3.out
new file mode 100644
index 0000000..1e8b314
--- /dev/null
+++ b/2019/tests/samples/03-1-3.out
@@ -0,0 +1 @@
+6
diff --git a/2019/tests/samples/03-2-3.in b/2019/tests/samples/03-2-3.in
new file mode 120000
index 0000000..73744a7
--- /dev/null
+++ b/2019/tests/samples/03-2-3.in
@@ -0,0 +1 @@
+03-1-3.in
\ No newline at end of file
diff --git a/2019/tests/samples/03-2-3.out b/2019/tests/samples/03-2-3.out
new file mode 100644
index 0000000..64bb6b7
--- /dev/null
+++ b/2019/tests/samples/03-2-3.out
@@ -0,0 +1 @@
+30