## ~athorp96/kattis-solutions

122a99fdffaf98df394609539f734d8d769a5d4b — Andrew Thorp 3 years ago
```Working on cd
```
```2 files changed, 50 insertions(+), 1 deletions(-)

A cd/cd.py
```
`M README.md => README.md +1 -1`
```@@ 1,6 1,6 @@
# Kattis Solutions

-My personal solutions to [Kattis](kattis) problems in various languages.
+My personal solutions to [Kattis][kattis] problems in various languages.

[kattis](https://open.kattis.com)

```
`A cd/cd.py => cd/cd.py +49 -0`
```@@ 0,0 1,49 @@
+"""
+CD
+    Jack and Jill have decided to sell some of their Compact Discs, while they
+    still have some value. They have decided to sell one of each of the CD titles
+    that they both own. How many CDs can Jack and Jill sell?
+    Neither Jack nor Jill owns more than one copy of each CD.
+
+Input
+    The input consists of a sequence of test cases. The first line of each test
+    case contains two positive integers N and M, each at most one million,
+    specifying the number of CDs owned by Jack and
+    by Jill, respectively. This line is followed by N lines listing the catalog
+    numbers of the CDs owned by Jack in increasing order, and M more lines listing
+    the catalog numbers of the CDs owned by Jill in increasing
+    order. Each catalog number is a positive integer no greater than one
+    billion. The input is terminated by a line containing two zeros. This last line
+    is not a test case and should not be processed.
+
+Output
+    For each test case, output a line containing one integer, the number of CDs
+    that Jack and Jill both own.
+
+Algorithm
+        read the test case indicator
+        read all of Jack's CDs into a set s
+        read all of Jill's CDs out of the set s
+        print the result
+
+"""
+s = set()
+while True:
+    n_m = input()
+    if n_m == "0 0":
+        exit()
+    n_m = n_m.split(' ')
+
+    n = int(n_m[0])
+    m = int(n_m[1])
+
+    for i in range(n):