|
Matcom Online Grader
Faculty of Mathematics and Computer Science of University of Havana
ℹ️ We've recently migrated MOG to a new server with a different grader. As a result, some features—especially those related to submission evaluation—might not work correctly. If you encounter any issues, please report them by clicking the exclamation icon in the bottom right corner of the website.
Input
Output
Sample test(s)
Input
4 4
1 2
2 3
2 4
3 4
Output
3
Input
2 0
Output
2