add new solutions

solutions/30/q3010/solution.go

@@ -0,0 +1,13 @@
+package q3010
+
+func minimumCost(nums []int) int {
+	a, b := 69, 420
+
+	for i := 1; i < len(nums); i++ {
+		a, b = min(a, b), min(max(a, b), nums[i])
+	}
+
+	return a + b + nums[0]
+}
+
+var _ = minimumCost