From f0a38e712f0c92ac2930a1091bf014756a43e0fd Mon Sep 17 00:00:00 2001
From: Anthony Wang
Date: Fri, 14 Oct 2022 11:07:26 -0400
Subject: Initial commit

---
 flipper.py | 22 ++++++++++++++++++++++
 test.f     |  4 ++++
 2 files changed, 26 insertions(+)
 create mode 100755 flipper.py
 create mode 100644 test.f

diff --git a/flipper.py b/flipper.py
new file mode 100755
index 0000000..f8e5b14
--- /dev/null
+++ b/flipper.py
@@ -0,0 +1,22 @@
+#!/usr/bin/python
+
+from sys import argv
+
+mem = [{}, {}]
+
+def flip(x, y):
+    if y not in mem[x]:
+        mem[x][y] = 1
+    else:
+        mem[x][y] = 1 - mem[x][y]
+    return mem[x][y]
+
+with open(argv[1]) as f:
+    for line in f.readlines():
+        l = list(map(int, line.split()))
+        if len(l) < 2:
+            continue
+        x = l[0]
+        for i in range(1, len(l)):
+            x = flip(x, l[i])
+        print(x)
diff --git a/test.f b/test.f
new file mode 100644
index 0000000..70dbd19
--- /dev/null
+++ b/test.f
@@ -0,0 +1,4 @@
+0 0
+0 0
+0 0
+0 0
-- 
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