Answer to 7 (in example) is 7.
but in your test its 17!!!

I hate this f*cking excercise.. it is second day I am trying to solve ...
now please help me
here is the input and output, please be careful to notice something
........
what is wrong here???
first number is my input and the second is output...
heeeelp
mikael@ubuntu:~/Desktop$ ./xx
1
1
mikael@ubuntu:~/Desktop$ ./xx
0
10
mikael@ubuntu:~/Desktop$ ./xx
2
2
mikael@ubuntu:~/Desktop$ ./xx
3
3
mikael@ubuntu:~/Desktop$ ./xx
4
22
mikael@ubuntu:~/Desktop$ ./xx
5
5
mikael@ubuntu:~/Desktop$ ./xx
6
23
mikael@ubuntu:~/Desktop$ ./xx
8
24
mikael@ubuntu:~/Desktop$ ./xx
9
33
mikael@ubuntu:~/Desktop$ ./xx
10
25
mikael@ubuntu:~/Desktop$ ./xx
20
45
mikael@ubuntu:~/Desktop$ ./xx
25
55
mikael@ubuntu:~/Desktop$ ./xx
30
56
mikael@ubuntu:~/Desktop$ ./xx
45
59
mikael@ubuntu:~/Desktop$ ./xx
60
256
mikael@ubuntu:~/Desktop$ ./xx
105
357
mikael@ubuntu:~/Desktop$ ./xx
108
269
mikael@ubuntu:~/Desktop$

and the fail is on fifth test

"mikael@ubuntu:~/Desktop$ ./xx
4
22
mikael@ubuntu:~/Desktop$ ./xx
8
24"
wrong
4 4
8 8