想了半天一句话怎么解决，AI想出解包+匿名表达式，学到了

print((lambda x1,y1,x2,y2: abs(x1-x2)+abs(y1-y2) - ((x1-x2)**2 + (y1-y2)**2)**0.5)(*map(int, input().split()), *map(int, input().split())))