import sys input = lambda :sys.stdin.readline()[:-1] ni = lambda :int(input()) na = lambda :list(map(int,input().split())) sys.setrecursionlimit(10**7) yes = lambda :print("yes");Yes = lambda :print("Yes");YES = lambda : print("YES") no = lambda :print("no");No = lambda :print("No");NO = lambda : print("NO") ####################################################################### s = input() n = len(s) t = 0 m = 0 for x,i in enumerate(s): if i=="1": m+=1 t+=x+1 dp = [[0 for j in range(t+1)]for i in range(n+1)] dp[0][0] = 1 for i in range(m): p = [[0 for j in range(t+1)]for i in range(n+1)] p,dp=dp,p for j in range(n+1): for k in range(t+1): now = p[j][k] if now==0: continue #print(j,k) for l in range(j+1,n+1): nk = k+l if nk>t: continue #print(i,j,k,l,nk) dp[l][nk]+=now #print(dp) ans = 0 for i in range(n+1): ans+=dp[i][t] print(ans)