From 085fa299ff8bc0b87300922a94e7a7d9e03070e5 Mon Sep 17 00:00:00 2001
From: Rodolfo P A <6721075+rodoufu@users.noreply.github.com>
Date: Mon, 6 Jul 2026 14:52:06 -0300
Subject: [PATCH] Create fish.py

---
 codility_new/fish.py | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)
 create mode 100644 codility_new/fish.py

diff --git a/codility_new/fish.py b/codility_new/fish.py
new file mode 100644
index 0000000..952cfe6
--- /dev/null
+++ b/codility_new/fish.py
@@ -0,0 +1,21 @@
+# https://app.codility.com/programmers/lessons/7-stacks_and_queues/fish/
+def solution(A, B):
+    count = 0
+
+    fix_downstream = []
+
+    for i in range(len(A)):
+        going_up = B[i] == 0
+
+        if not going_up:
+            fix_downstream.append(A[i])
+        else:
+            while fix_downstream:
+                if A[i] > fix_downstream[-1]:
+                    fix_downstream.pop()
+                else:
+                    break
+            if len(fix_downstream) == 0:
+                count += 1
+
+    return count + len(fix_downstream)