问这是一套运动装置吗？

EN

ṁṠŒg$+2/FẸ

a=>a.map(b=p=x=>b[+(x<0)]+=[x*x,p*(p=x)>0])|b[1]==b[0]

a=>a.map(x=>b[i^=p*(p=x)<0&&-~(b[i]+=0)]+=[,x*x],b=[p=0,i=0])|b[1]+0==b[0]

a =>                    // given the input array a[]
  a.map(x =>            // for each x in a[]:
    b[i ^=              //   access b[i]:
      p * (p = x)       //     we keep track of the previous entry in p
      < 0 &&            //     if p and x have opposite signs:
      -~(b[i] += 0)     //       append a '0' to b[i] and update i: 0 -> 1, 1 -> 0
    ] += [, x * x],     //   append a comma followed by x² to b[i]
    b = [p = 0, i = 0]  //   start with p = 0, i = 0 and b = [0, 0]
  ) |                   // end of map()
  b[1] + 0              // this will append a '0' to b[1] if it was turned into a string
                        // or let it unchanged if it's still equal to zero (integer),
                        // which handles the 'empty input' edge case
  == b[0]               // compare the result with b[0]

x=input()
o=[];p=[]
for a,b in zip(x,x[1:]):
 if 0<a*x[0]:
	p+=a,-a
	if b*a<0:o+=p[::2]+p[1::2];p=[]
print o==x