import sys
input = sys.stdin.readline

S=input().strip()
LEN=len(S)

DP=[[0]*(62) for i in range(LEN+2)]

DP[0][31]=1

for i in range(LEN+2):
    for j in range(62):
        DP[i][j]+=DP[i-1][j]

    if i<LEN-1:
        if S[i]=="0" and S[i+1]=="1":
            for j in range(61,-1,-1):
                DP[i+2][j]+=DP[i][j-1]

        if S[i]=="1" and S[i+1]=="0":
            for j in range(61):
                DP[i+2][j]+=DP[i][j+1]
        


ANS=0
print(DP[-1][31])