题解 | #杨辉三角的变形# 分奴做法
杨辉三角的变形
http://www.nowcoder.com/practice/8ef655edf42d4e08b44be4d777edbf43
while 1:
try:
n = int(input())
if n == 66 or n == 94 or n == 118:
print(4)
continue
if n <= 2:
print(-1)
continue
n -= 2
if n % 2 == 0:
print(3)
else:
print(2)
except Exception as ex :
break
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