From c0efe232d6c3324bcece27e3a46fb8792219f68b Mon Sep 17 00:00:00 2001
From: wolves <yangwolves@foxmail.com>
Date: Fri, 26 Dec 2025 02:11:10 +0800
Subject: [PATCH] routine

---
 25/12/go/3075.go | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)
 create mode 100644 25/12/go/3075.go

diff --git a/25/12/go/3075.go b/25/12/go/3075.go
new file mode 100644
index 0000000..a08ae7b
--- /dev/null
+++ b/25/12/go/3075.go
@@ -0,0 +1,19 @@
+package A
+
+import (
+	"slices"
+)
+
+func maximumHappinessSum(happiness []int, k int) int64 {
+	ans := int64(0)
+	slices.SortFunc(happiness, func(a, b int) int {
+		return b - a
+	})
+	for i, v := range happiness {
+		if v < i || i > k-1 {
+			break
+		}
+		ans += int64(v - i)
+	}
+	return ans
+}