1 files changed, 9 insertions, 0 deletions
diff --git a/4.py b/4.py
new file mode 100644
index 0000000..3279e7e
--- /dev/null
+++ b/4.py
@@ -0,0 +1,9 @@
+with open('4.in') as f:
+    inp = [tuple(tuple(map(int, elf.split('-'))) for elf in line.rstrip().split(',')) for line in f]
+def fully_contains(a, b):
+    return  b[0] >= a[0] and b[1] <= a[1] or a[0] >= b[0] and a[1] <= b[1]
+def overlaps(a, b):
+    return b[0] <= a[0] <= b[1] or b[0] <= a[1] <= b[1] or \
+            a[0] <= b[0] <= a[1] # or a[0] <= b[1] <= a[1]
+print(sum(fully_contains(a, b) for a, b in inp))
+print(sum(overlaps(a, b) for a, b in inp))