摘要:
10020Given several segments of line (int the X axis) with coordinates [Li, Ri]. You are to choose the minimalamount of them, such they would completel... 阅读全文
摘要:
Is It A Tree?Time Limit: 2000/1000 MS (Java/Others)Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 16702Accepted Submission(s): 3761 Pr... 阅读全文