Add kattis prob judging in python3

kattis/judging/solution.py

@@ -0,0 +1,22 @@
+n = int(input())
+d = {}
+for i in range(n):
+    s = input()
+    if s in d:
+        d[s] += 1
+    else:
+        d[s] = 1
+e = {}
+for i in range(n):
+    s = input()
+    if s in e:
+        e[s] += 1
+    else:
+        e[s] = 1
+
+ans = 0
+for k in d:
+    if k not in e:
+        continue
+    ans += min(d[k], e[k])
+print(ans)