diff --git a/LeetCode/0013_Roman_to_Integer.py b/LeetCode/0013_Roman_to_Integer.py
new file mode 100644
index 0000000..0b44895
--- /dev/null
+++ b/LeetCode/0013_Roman_to_Integer.py
@@ -0,0 +1,12 @@
+class Solution:
+    def romanToInt(self, s: str) -> int:
+        value = {'M': 1000,'D': 500, 'C': 100,'L': 50,'X': 10,'V': 5,'I': 1}
+        p = 0;ans = 0
+        n = len(s)
+        for i in range(n-1, -1, -1):
+            if value[s[i]] >= p: 
+                ans += value[s[i]]
+            else:
+                ans -= value[s[i]] 
+            p = value[s[i]]
+        return ans