diff --git a/20201113/main.go b/20201113/main.go
index 57f9e0a..2ccc06a 100644
--- a/20201113/main.go
+++ b/20201113/main.go
@@ -6,6 +6,7 @@ func main() {
 	fmt.Println(isCompliance([]int{2, 3, 3, 2, 4}))
 	fmt.Println(isCompliance([]int{3, 3, 2, 4}))
 	fmt.Println(isCompliance([]int{4, 5, 1, 2}))
+	fmt.Println(isCompliance([]int{5, 1, 2, 3}))
 }
 
 func isCompliance(nums []int) bool {
diff --git a/20201113/main_test.go b/20201113/main_test.go
index 7742528..4924ae7 100644
--- a/20201113/main_test.go
+++ b/20201113/main_test.go
@@ -21,6 +21,11 @@ func Test_isCompliance(t *testing.T) {
 			args{[]int{4, 2, 1}},
 			false,
 		},
+		{
+			"example_3",
+			args{[]int{5, 1, 2, 3}},
+			true,
+		},
 	}
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
diff --git a/20201114/main.go b/20201114/main.go
new file mode 100644
index 0000000..1aca8b3
--- /dev/null
+++ b/20201114/main.go
@@ -0,0 +1,23 @@
+package main
+
+import "fmt"
+
+var steps = []int{1, 2}
+
+func main() {
+	fmt.Println("count:", climbingStairs(100, steps))
+}
+
+func climbingStairs(n int, step []int) int {
+	if n <= 1 {
+		return 1
+	}
+	pre1 := 1
+	pre2 := 1
+	for i := 2; i <= n; i++ {
+		cur := pre1 + pre2
+		pre2 = pre1
+		pre1 = cur
+	}
+	return pre1
+}
diff --git a/20201114/main_test.go b/20201114/main_test.go
new file mode 100644
index 0000000..3a4b443
--- /dev/null
+++ b/20201114/main_test.go
@@ -0,0 +1,33 @@
+package main
+
+import "testing"
+
+func Test_climbingStairs(t *testing.T) {
+	type args struct {
+		n    int
+		step []int
+	}
+	tests := []struct {
+		name string
+		args args
+		want int
+	}{
+		{
+			"1",
+			args{2, []int{1, 2}},
+			2,
+		},
+		{
+			"3",
+			args{3, []int{1, 2}},
+			3,
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			if got := climbingStairs(tt.args.n, tt.args.step); got != tt.want {
+				t.Errorf("climbingStairs() = %v, want %v", got, tt.want)
+			}
+		})
+	}
+}