Strange Grid

 1 def main():

 2 

 3     r,c = map(int, raw_input().split(' '))

 4 

 5     if r % 2 != 0:

 6         base = 5*(r-1)

 7     else:

 8         base = 5*(r-2) + 1 

 9 

10     col = (c-1) * 2

11 

12     print base + col 

13 

14 main()

Link:

　　https://www.hackerrank.com/challenges/strange-grid/submissions/code/11668215

学习：

　　本质就是找各个纬度的逻辑关系