input:
2
1 600000
1
600001

output:
599999

nope.

Edited by author 30.01.2016 16:32

Edited by author 30.01.2016 16:33

My submission get AC when i use Visual C++ 2013 and get TLE using G++ 4.9 C++11... Why?

I had java ML 12. It was solved by replacing BufferedReader/StringTokenizer -> manual integers reading by in.read().