def change(S,a,b,c,d):
    return S[:a]+S[c:d+1]+S[b+1:c]+S[a:b+1]+S[d+1:]

S=input()
N=len(S)

E={S}

for tl in range(N):
    t0=t1=0
    for tr in range(tl,N):
        if S[tr]=="0":
            t0+=1
        else:
            t1+=1

        for ul in range(tr+1,N):
            u0=u1=0
            for ur in range(ul,N):
                if S[ur]=="0":
                    u0+=1
                else:
                    u1+=1

                if t0==u0 and t1==u1:
                    E.add(change(S,tl,tr,ul,ur))

print(len(E))