想用 numpy 自带的解线性方程组搞这道题，然后发现提交会随机 RE，非常奇怪。

https://www.luogu.com.cn/record/52969303

https://www.luogu.com.cn/record/52970269

https://www.luogu.com.cn/record/52969766

这些提交都是同一份代码。

import numpy as np
import sys

sys.setrecursionlimit(1000000000)

n = int(input())
A = []
B = []
for i in range(n):
    x = [int(i) for i in input().split()]
    aa = x[:-1]
    bb = x[-1]
    A.append(aa)
    B.append(bb)

a = np.array(A)
b = np.array(B)
try:
    x = np.linalg.solve(a, b)
except:
    print("No Solution")
else:
    for i in range(len(x)):
        print("%.2f" % (x[i]))