diff --git a/pam.go b/pam.go
index 16590d9..40047c5 100644
--- a/pam.go
+++ b/pam.go
@@ -52,12 +52,10 @@ func minDistance2Mat(vec []float64, mat [][]float64) float64 {
 			t += math.Pow(vec[v]-mat[m][v], 2)
 		}
 		t = math.Sqrt(t)
-		//log.Println("当前距离", t)
 		if t < r {
 			r = t
 		}
 	}
-	//log.Println("最小距离", r)
 	return r
 }
 
@@ -79,7 +77,6 @@ func min2minDistance(vec []float64, mat [][]float64) (min float64, min2 float64)
 			t += math.Pow(vec[v]-mat[m][v], 2)
 		}
 		t = math.Sqrt(t)
-		//log.Println("当前距离", t)
 		if t < r {
 			r2 = r
 			r = t
@@ -88,10 +85,8 @@ func min2minDistance(vec []float64, mat [][]float64) (min float64, min2 float64)
 		}
 
 	}
-	//log.Println("最小距离", r)
 	min = r
 	min2 = r2
-	//log.Println("r r2 t", r, r2, t)
 	return
 }
 
@@ -106,8 +101,6 @@ func subDataMap(set map[int]interface{}, ctx *Ctx) [][]float64 {
 }
 
 func subDataInt(i int, ctx *Ctx) []float64 {
-	//r := make([][]float64, 1)
-	//r[0] = ctx.data[i]
 	return ctx.data[i]
 }
 
@@ -228,7 +221,6 @@ func swap(ctx *Ctx) {
 						log.Fatalln("Input must be a string")
 					}
 					sumKjih += Kjih
-					//log.Println(Kjih)
 
 				}
 				if sumKjih < minKjih {
@@ -254,6 +246,7 @@ func swap(ctx *Ctx) {
 }
 
 func main() {
+	sT := time.Now()
 	ctx := Ctx{}
 	ctx.data = initData()
 	ctx.SetS = make(map[int]interface{})
@@ -261,5 +254,6 @@ func main() {
 	ctx.SetS[2] = nil
 	selectInitCluster(&ctx)
 	swap(&ctx)
+	fmt.Println("Elapse: ", time.Since(sT).Seconds())
 	fmt.Println("Hello World!")
 }