1214: 求m到n之间的偶数之和

Memory Limit:128 MB Time Limit:1.000 S
Judge Style:Text Compare Creator:
Submit:25 Solved:17

Description

输入两个整数M,N(M<N),求他们之间所有偶数之和

Input

两个整数M,N

Output

之间所有偶数之和

Sample Input Copy

2 6

Sample Output Copy

12