cxxpython9
diff --git a/‎.idea/workspace.xml‎
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diff --git a/‎leetcode/13. Roman to Integer.py‎
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+# -*- coding:utf-8 -*-
+'''
+Given a roman numeral, convert it to an integer.
+
+Input is guaranteed to be within the range from 1 to 3999.
+
+'''
+
+class Solution(object):
+    def romanToInt(self, s):
+        romanDict = {'M':1000, 'D':500, 'C':100, 'L':50, 'X':10, 'V':5, 'I':1}
+        res, p = 0, 'I'
+        for ch in s[::-1]:
+            if romanDict[ch] < romanDict[p]:
+                res = res - romanDict[ch]
+            else:
+                res = res + romanDict[ch]
+            p = ch
+        return res
+
+s = Solution()
+print((s.romanToInt("IX")))