The cows are going to space! They plan to achieve orbit by building a sort of space elevator: a giant tower of blocks. They have K (1 <= K <= 400) different types of blocks with which to build the tower. Each block of type i has height h_i (1 <= h_i <= 100) and is available in quantity c_i (1 <= c_i <= 10). Due to possible damage caused by cosmic rays, no part of a block of type i can exceed a maximum altitude a_i (1 <= a_i <= 40000). Help the cows build the tallest space elevator possible by stacking blocks on top of each other according to the rules. 有一群牛要上太空。他们计划建一个太空梯-----用一些石头垒。他们有K种不同类型的石头，每一种石头的高度为h_i，数量为c_i,并且由于会受到太空辐射，每一种石头不能超过这种石头的最大建造高度a_i。帮助这群牛建造一个最高的太空梯。

Line 1: A single integer, K Lines 2…K+1: Each line contains three space-separated integers: h_i, a_i, and c_i.

Line 1: A single integer H, the maximum height of a tower that can be built

3
7 40 3
5 23 8
2 52 6

48


OUTPUT DETAILS: 

From the bottom: 3 blocks of type 2, below 3 of type 1, below 6 of type 3. Stacking 4 blocks of type 2 and 3 of type 1 is not legal, since the top of the last type 1 block would exceed height 40.
从底部开始：3个类型2的块，得到高度为15，不超过23，下面是类型1的3个，高度为21，此时的总高度为36，不超过40，最后是类型3的6个，高度为12，总高度为48，不超过52，但如果将4个类型2和类型1的3个块堆叠在一起是不合法的，因为最后一个类型1块的顶部将超过高度40 。