routine

25/11/go/3432.go

@@ -0,0 +1,22 @@
+package L12
+
+func countPartitions(nums []int) int {
+	n := len(nums)
+	count := 0
+	prefix := make([]int, n)
+	for i, v := range nums {
+		count += v
+		prefix[i] = count
+	}
+
+	ans := 0
+	for i, v := range prefix {
+		if i == n-1 {
+			break
+		}
+		if (count-2*v)%2 == 0 {
+			ans++
+		}
+	}
+	return ans
+}