diff --git "a/leetcode3/\354\265\234\354\233\220\354\244\200/1137. N-th Tribonacci Number.py" "b/leetcode3/\354\265\234\354\233\220\354\244\200/1137. N-th Tribonacci Number.py"
new file mode 100644
index 00000000..97749977
--- /dev/null
+++ "b/leetcode3/\354\265\234\354\233\220\354\244\200/1137. N-th Tribonacci Number.py"	
@@ -0,0 +1,17 @@
+class Solution:
+    def tribonacci(self, n: int) -> int:
+        if n == 0:
+            return 0
+        if n == 1 or n == 2:
+            return 1
+        a = 0
+        b = 1
+        c = 1
+
+        for i in range(n-2):
+            temp = a + b + c
+            a = b
+            b = c
+            c = temp
+            
+        return c