题目描述
This problem was deleted from the contest, because it was used previously at another competition.
输入格式
见题面 Input 部分
输出格式
见题面 Output 部分
样例输入
1 1
1 2 100
样例输出
6
This problem was deleted from the contest, because it was used previously at another competition.
见题面 Input 部分
见题面 Output 部分