题解 | #杨辉三角的变形#
杨辉三角的变形
http://www.nowcoder.com/practice/8ef655edf42d4e08b44be4d777edbf43
while True:
try:
n = int(input())
if n > 2 and n % 2 == 0:
if n % 4 == 0:
print(3)
else:
print(4)
elif n > 2 and n % 2 == 1:
print(2)
else:
print(-1)
except:
break
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