diff --git a/24.7.py b/24.7.py
index d9c12bf..01c5475 100644
--- a/24.7.py
+++ b/24.7.py
@@ -17,11 +17,18 @@
 # res = max([len(match[0] + match[1])
 #            for match in matches])
 # print(res)
+from itertools import count
 
-f = open('24_7.txt').readline()
-f = f.replace('CD', 'C D').split()
-m = 0
-for i in range(len(f)-161):
-    a=''.join(f[i:i+161])
-    m = max(m, len(a))
-print(m)
\ No newline at end of file
+
+f = open('24_7.txt').read()
+a=[]
+j=0
+count = 0
+for i in range(len(f)-1):
+    if f[i]+f[i+1]=='CD':
+        count+=1
+        if count>160:
+            count=1
+            a.append(i+1-j)
+            j=i
+print(max(a))
\ No newline at end of file