keep的最小二乘调了1个多小时还是AC为0。emmmmm。求大佬回帖 题目分别是差值中位数、密码校验、最小二乘。AC:90%,100%,0%😥 import sys X = [] Y = [] for line in sys.stdin: x, y = list(map(int, line.split(" "))) X.append(x) Y.append(y) s1 = s2 = s3 = s4 = 0 n = len(X) for i in range(n): s1 = s1 + X[i] * Y[i] ...