With regard to the incorrect test data, the Haskell sample test has the same incorrect test.

Expected different result:

Expected string length 763 but was 872. Strings differ at index 21.

Expected: "Lorem ipsum\ndolor\nsit\namet,\nconsectetur\nadipiscing\nelit.\n..."

But was: "Lorem ipsum\ndolor sit amet,\nconsectetur\nadipiscing\nelit.\n..."

In this test len = 15. Second line should be "dolor sit amet," which is 15 symbols, but expected is "dolor\nsit\namet,\n"
I'm using C#.

My solution on javascript works fine. So pls fix tests for c#.

What about "5??*1?=5???" ?
Correct answer is 0 or i don't understand...