diff --git a/26/01/go/3650.go b/26/01/go/3650.go
deleted file mode 100644
index bb548ea..0000000
--- a/26/01/go/3650.go
+++ /dev/null
@@ -1,11 +0,0 @@
-package A
-
-func minCost(n int, edges [][]int) int {
-	edgeM := make([][]int, n)
-	for i := 0; i < n; i++ {
-		edgeM[i] = make([]int, n)
-	}
-	for _, e := range edges {
-		edgeM[e[0]][e[1]] = e[2]
-	}
-}
diff --git a/26/03/1545.go b/26/03/1545.go
index 9f60e19..d5cfec0 100644
--- a/26/03/1545.go
+++ b/26/03/1545.go
@@ -1,4 +1,4 @@
-package A
+package main
 
 import (
 	"slices"
diff --git a/26/03/1582.go b/26/03/1582.go
index b779f5d..f1933a9 100644
--- a/26/03/1582.go
+++ b/26/03/1582.go
@@ -1,4 +1,4 @@
-package A
+package main
 
 func numSpecial(mat [][]int) int {
 	res := 0
diff --git a/26/03/1689.go b/26/03/1689.go
index b60916c..2c0f8d2 100644
--- a/26/03/1689.go
+++ b/26/03/1689.go
@@ -1,4 +1,4 @@
-package A
+package main
 
 func minPartitions(n string) int {
 	res := 0
diff --git a/26/03/1758.go b/26/03/1758.go
new file mode 100644
index 0000000..f298bd2
--- /dev/null
+++ b/26/03/1758.go
@@ -0,0 +1,16 @@
+package main
+
+func minOperations(s string) int {
+	a := 0
+	for i := 0; i < len(s); i++ {
+		expected := byte('0' + i%2)
+		if s[i] == expected {
+			a++
+		}
+	}
+	b := len(s) - a
+	if a < b {
+		return a
+	}
+	return b
+}
diff --git a/go.mod b/go.mod
new file mode 100644
index 0000000..db676c8
--- /dev/null
+++ b/go.mod
@@ -0,0 +1,3 @@
+module git.wolves.top/lc
+
+go 1.25.0