I get "wrong answer" for test №3:
2687809 17:47:13
28 июл 2009 kiriloff 1002 C# Wrong answer 3 0.109 1 129 КБ
Can you help me, what problem of this?

I'm failing the same test. Do you run custom unit tests on your code? I have a few tests I run on mine. perhaps between the two of us we can come up with some edge cases for our own solutions.

Here are some of my own tests, They ensure that my solution can get through this sites first two tests. maybe you can spot an edge case and suggest a new test to perform.

test 1
number:
1268432063036979073
vocabulary:
i am the bone of my sword sandwitch casting service it one
expected answer:
i am the bone of my sword

test 2
number:
7325189087
vocabulary:
it your reality real our
expected answer:
reality our

test 3
number:
4294967296
vocabulary:
it your reality real our
expected answer:
No solution.

test 4
number:
27386428376
expected answer:
No solution.