diff --git a/helper/storage.go b/helper/storage.go
index 37e3234..f26748e 100644
--- a/helper/storage.go
+++ b/helper/storage.go
@@ -10,11 +10,17 @@ func (c *CountReward) ResetTo(size int) {
 		c.Counts = make([]int, size)
 	}
 	c.Counts = c.Counts[:size]
+	for idx := range c.Counts {
+		c.Counts[idx] = 0
+	}
 
 	if len(c.Rewards) > size {
 		c.Rewards = make([]float64, size)
 	}
 	c.Rewards = c.Rewards[:size]
+	for idx := range c.Rewards {
+		c.Rewards[idx] = 0
+	}
 }
 
 func (c *CountReward) Count(res *[]int) {
@@ -27,9 +33,23 @@ func (c *CountReward) Count(res *[]int) {
 	}
 
 	(*res) = (*res)[:len(c.Counts)]
+
 	copy(*res, c.Counts)
 }
 
+func (c *CountReward) CountSum() (i int) {
+	for _, v := range c.Counts {
+		i = i + v
+	}
+	return i
+}
+func (c *CountReward) CountReward() (i int) {
+	for _, v := range c.Counts {
+		i = i + v
+	}
+	return i
+}
+
 func (c *CountReward) Reward(res *[]float64) {
 	if res == nil {
 		r := make([]float64, len(c.Rewards))