From 6ad43bcb6ae206a3a2d48452814809309cf75d39 Mon Sep 17 00:00:00 2001
From: tiennm99 <tiennm99@outlook.com>
Date: Sat, 29 Nov 2025 00:32:40 +0700
Subject: [PATCH] feat(c): add hhcn

---
 c/hhcn.c | 13 +++++++++++++
 1 file changed, 13 insertions(+)
 create mode 100644 c/hhcn.c

diff --git a/c/hhcn.c b/c/hhcn.c
new file mode 100644
index 0000000..bc7cf69
--- /dev/null
+++ b/c/hhcn.c
@@ -0,0 +1,13 @@
+#include <stdio.h>
+#include <math.h>
+
+int main() {
+    long long a, b, c;
+    scanf("%lld %lld %lld", &a, &b, &c);
+
+    double numerator = 4.0 * (a * b + b * c + c * a);
+    double denominator = sqrt((double) (a * b * c));
+
+    printf("%.0f\n", numerator / denominator);
+    return 0;
+}