1735: 修剪苹果树
Memory Limit:128 MB
Time Limit:1.000 S
Judge Style:Text Compare
Creator:
Submit:22
Solved:17
Description
Input
Output
输出一个数,最多能留住的苹果的数量。
Sample Input Copy
5 2
1 2 9
1 3 8
3 4 12
3 5 12
Sample Output Copy
20
HINT
1<=M<= N,1<N<=100