diff --git a/python/e099.py b/python/e099.py
index 8df7b11..22d38ad 100644
--- a/python/e099.py
+++ b/python/e099.py
@@ -1,24 +1,43 @@
+from collections import namedtuple
 
 
-# def lower_upper_bound(a, b):
-#     print(a, b)
-#     return 0
+Exp = namedtuple("Exp", ["b", "p"])
+
+
+def gcd(a, b):
+    while b != 0:
+        a, b = b, a % b
+    return a
+
+
+def compare_exp(a, b):
+    g = gcd(a.p, b.p)
+    print(g)
+    return (Exp(a.b, a.p // g), Exp(b.b, b.p // g))
+
+
+def read_exps():
+    with open("../txt/EulerProblem099.txt", "r") as f:
+        return [Exp(int(s[0]), int(s[1]))
+                for i, line in enumerate(f.readlines())
+                if (s := line.split(","))]
 
 
 def euler_099():
-    with open("../txt/EulerProblem099.txt", "r") as f:
-        pairs = [(int(s[0]), int(s[1]), i)
-                 for i, line in enumerate(f.readlines())
-                 if (s := line.split(","))]
+    pairs = read_exps()
+    #a = Exp(2, 350)
+    #b = Exp(5, 150)
 
-    # pairs.sort()
-
-    print(pairs[:2])
+    i = 19
+    a, b = pairs[i:i + 2]
+    print(a, b)
+    a, b = compare_exp(a, b)
+    print(a, b)
     return 0
 
 
-
 if __name__ == "__main__":
     solution = euler_099()
     print("e099.py: " + str(solution))
-    assert(solution == 0)
+    # assert(solution == 0)
+