9 lines
89 B
Text
9 lines
89 B
Text
1 3
|
|
# n 1
|
|
1 1 -1 # n >= 1
|
|
-1
|
|
|
|
2 4
|
|
# i n 1
|
|
1 1 0 1 # i >= -1
|
|
1 -1 1 0 # i <= n
|