One side of the street there are several houses. Because of environmental reasons people want to plant some trees on the roadside, roadside area is divided into blocks, and was number into 1 .. N, each part of a unit size and up to plant a tree, each resident want to plant some trees in front and specifies three numbers B, E, T, which means that residents want three numbers in between B and E at least kind of T tree. Of course, B ≤ E, residents must remember that in the designated area can not grow more than the number of tree plots area, so T ≤ E-B+l. Residents who want to plant trees in their respective regions can overlap. Your task is to find the minimum required to meet all of the number of trees.

Trees.txt

• We are an exchange download platform that only provides communication channels. The downloaded content comes from the internet. Except for download issues, please Google on your own.
• The downloaded content is provided for members to upload. If it unintentionally infringes on your copyright, please contact us.
• Please use Winrar for decompression tools
• If download fail, Try it againg or Feedback to us.
• If downloaded content did not match the introduction, Feedback to us，Confirm and will be refund.
• Before downloading, you can inquire through the uploaded person information

Nothing．