Codeforces Round 634 - Problem D. Anti-Sudoku

Codeforces Round 634 - Problem D. Anti-Sudoku It is the complete explanation of Codeforces Round 634 - Problem D. Anti-Sudoku *************************************************************************** Code is below : https://ideone.com/afU2v8 ******************************************************************************* Codeforces Question Playlist : https://www.youtube.com/playlist?list=PLEL7R4Pm6EmDaWkjw7M2x9qFstCHoC6jC Graph Theory Playlist : https://www.youtube.com/playlist?list=PLEL7R4Pm6EmDHmdh9G2pYoEEMSfK_Sjir