diff --git a/utils/utils.go b/utils/utils.go
index 5c77b06..0d4ce34 100644
--- a/utils/utils.go
+++ b/utils/utils.go
@@ -46,6 +46,24 @@ func ParseIntArray(s string, sep string) []int {
 	return result
 }
 
+func ParseInt64Array(s string, sep string) []int64 {
+	result := []int64{}
+
+	var vals []string
+	if sep == " " {
+		vals = strings.Fields(strings.TrimSpace(s))
+	} else {
+		vals = strings.Split(strings.TrimSpace(s), sep)
+	}
+
+	for _, val := range vals {
+		n, _ := strconv.ParseInt(val, 10, 64)
+		result = append(result, n)
+	}
+
+	return result
+}
+
 func IntPow(x int, y int) int {
 	result := 1