题解 | 小红的方神题spj
小红的方神题spj
https://www.nowcoder.com/practice/d31bdd6ec6ff45ca9d0fb825364043c6
def solve(testcase):
n = II()
A = LII()
while len(A) > 1:
B = []
for i in range(1, len(A)):
B.append(abs(A[i] - A[i - 1]))
A = B
print(A[0])
for testcase in range(1):
solve(testcase)
