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