杨辉三角的变形
杨辉三角的变形
http://www.nowcoder.com/questionTerminal/8ef655edf42d4e08b44be4d777edbf43
1、先找规律：
-1 -1 (2 3 2 4) (2 3 2 4) (2 3 2 4) 循环
2、
def demo(temp):
arr = [4, 2, 3, 2]
if temp <= 2:
return -1
return arr[(temp-2)%4]
import sys
for line in sys.stdin:
a = line.split()
for i in a:
print(demo(int(i)))
