题解 | #杨辉三角的变形#
杨辉三角的变形
https://www.nowcoder.com/practice/8ef655edf42d4e08b44be4d777edbf43
# 20240622
n = int(input())
if (n ==1 or n ==2):
print(-1)
else:
if n%4 == 3 or n%4 ==1:
print(2)
elif n%4 == 0:
print(3)
else:
print(4)
