4 files changed, 69 insertions, 0 deletions

diff --git a/2024/01/Makefile b/2024/01/Makefile
new file mode 100644
index 0000000..706085c
--- /dev/null
+++ b/2024/01/Makefile
@@ -0,0 +1,24 @@
+CC=g++ -std=c++20 -g -Wall
+
+a:
+        ${CC} -o a.out day01a.cpp
+
+b:
+        ${CC} -o b.out day01b.cpp
+
+clean:
+        rm -f a b
+
+atest: a
+        ./a.out
+
+btest: b
+        ./b.out
+
+arun: a
+        ./a.out < input
+
+brun: b
+        ./b.out < input
+
+.PHONY: a b clean atest btest arun brun
diff --git a/2024/01/b.out b/2024/01/b.out
new file mode 100755
index 0000000..3b75578
--- /dev/null
+++ b/2024/01/b.out
diff --git a/2024/01/day01a.cpp b/2024/01/day01a.cpp
new file mode 100644
index 0000000..e4a61e0
--- /dev/null
+++ b/2024/01/day01a.cpp
@@ -0,0 +1,24 @@
+#include <iostream>
+#include <algorithm>
+#include <vector>
+using namespace std;
+
+int main() {
+        int x, y, tot;
+        vector<int> v, w;
+
+        while (cin >> x >> y) {
+                v.push_back(x);
+                w.push_back(y);
+        }
+
+        sort(v.begin(), v.end());
+        sort(w.begin(), w.end());
+
+        tot = 0;
+        for (unsigned i = 0; i < v.size(); i++)
+                tot += abs(v[i] - w[i]);
+
+        cout << tot << endl;
+        return 0;
+}
diff --git a/2024/01/day01b.cpp b/2024/01/day01b.cpp
new file mode 100644
index 0000000..91ef0db
--- /dev/null
+++ b/2024/01/day01b.cpp
@@ -0,0 +1,21 @@
+#include <iostream>
+#include <algorithm>
+#include <vector>
+using namespace std;
+
+int main() {
+        int x, y, tot;
+        vector<int> v, w;
+
+        while (cin >> x >> y) {
+                v.push_back(x);
+                w.push_back(y);
+        }
+
+        tot = 0;
+        for (unsigned i = 0; i < v.size(); i++)
+                tot += v[i] * count(w.begin(), w.end(), v[i]);
+
+        cout << tot << endl;
+        return 0;
+}