day 6 part 2

6/main.py

@@ -1,24 +1,30 @@
 file = open('input.txt','r')
 
-input = ['']
-
-rows = 0
+input = []
+aset = []
 
 for l in file:
     if l == '\n':
-        input.append('')
-        rows += 1
+        input.append(aset)
+        aset = []
     else:
-        input[rows] += l.replace('\n','')
+        aset.append(l.replace('\n',''))
+input.append(aset)
 
 sum = 0
 for i in input:
-    chars = []
+    res = []
     print(i)
-    for c in i:
-        if c not in chars:
-            chars.append(c)
-    print(chars)
+    for c in i[0]:
+        count = 0
+        for s in i:
+            if c in s:
+                count += 1
+        if count == len(i):
+            res.append(c)
+    print(res)
+    print(str(len(res)))
+    sum += len(res)
+    print(str(sum))
     print('-' * 50)
-    sum += len(chars)
 print(str(sum))