From 0aefd410a18acf826af5187cdb038fd9b4f25fc5 Mon Sep 17 00:00:00 2001
From: Sebastiano Tronto <sebastiano@tronto.net>
Date: Sun, 1 Dec 2024 09:40:19 +0100
Subject: Started 2024 + day 1

---
 2024/01/day01b.cpp | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)
 create mode 100644 2024/01/day01b.cpp

(limited to '2024/01/day01b.cpp')

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;
+}
-- 
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