#D8424. Vector Field
Vector Field
Vector Field
Example
Input
9 0 0 v 1 0 > 2 0
Output
9
inputFormat
Input
9 0 0 v 1 0 > 2 0
outputFormat
Output
9
样例
9
0 0 v
1 0 >
2 09
Example
Input
9 0 0 v 1 0 > 2 0
Output
9
Input
9 0 0 v 1 0 > 2 0
Output
9
9
0 0 v
1 0 >
2 09