transaction transaction transaction Time Limit: 4000/2000 MS (Java/Others) Memory Limit: 132768/132768 K (Java/Others)Total Submission(s): 1496 Accepted Submission(s): 723 Problem Description Kelukin is a businessman. Every day, he travels arou…
Problem Description Kelukin is a businessman. Every day, he travels around cities to do some business. On August 17th, in memory of a great man, citizens will read a book named "the Man Who Changed China". Of course, Kelukin wouldn't miss this c…
Problem Description Connecting the display screen and signal sources which produce different color signals by cables, then the display screen can show the color of the signal source.Notice that every signal source can only send signals to one display…