[problem:2059B]↵
can any one help me with k<n case ...↵
i don't know how to approach .it.↵
↵
can anyone also tell me how can i approach div 2 B problem as i am unable to do it..
can any
i don't know how to approach .it.↵
↵
can anyone also tell me how can i approach div 2 B problem as i am unable to do it..