Practice on various contest.
Note some solution (4 - 5) are wrong which i need to fix during revision and some needs optimization .
- All the problem names are replaced with their integer code
- For compiling in your own machine if you have DLOCAl flag in your compile then have uj.h file in the same directory or else remove those line from the file.
- I am also preparing some inputs which are tricky for the test_cases.