## https://yukicoder.me/problems/no/1694

from collections import deque

def main():
    S = input()

    init_state = 0
    for i in range(len(S)):
        if S[i] == "1":
            init_state |= (1 << i)
    states = {init_state:0}
    queue = deque()
    queue.append(init_state)

    while len(queue) > 0:
        state = queue.popleft()
        for l in range(2, (len(S) // 2) + 1):
            # 0, 1の状態を計算
            array = [[-1, -1] for _ in range(len(S) + 1 - l)]
            cnt = [0, 0]
            for k in range(l):
                if state & (1 << k) > 0:
                    cnt[1] += 1
                else:
                    cnt[0] += 1
            array[0][0] = cnt[0]
            array[0][1] = cnt[1]

            for k in range(l, len(S)):
                if state & (1 << k) > 0:
                    cnt[1] += 1
                else:
                    cnt[0] += 1
                if state & (1 << (k - l)) > 0:
                    cnt[1] -= 1
                else:
                    cnt[0] -= 1
                array[k - (l - 1)][0] = cnt[0]
                array[k - (l - 1)][1] = cnt[1]
            
            a_set = {}
            for s_i in range(len(array)):
                cnt = array[s_i]
                if cnt[0] == 0 or cnt[1] == 0:
                    continue
                t_cnt = tuple(cnt)
                if t_cnt not in a_set:
                    a_set[t_cnt] = []
                a_set[t_cnt].append(s_i)
            
            
            for value_indexes in a_set.values():
                for indi in range(len(value_indexes)):
                    s_i = value_indexes[indi]
                    for indj in range(indi + 1, len(value_indexes)):
                        t_i = value_indexes[indj]
                        if s_i + l <= t_i:
                            s_bit = (state & ((2 **l - 1) << s_i))
                            t_bit = (state & ((2 **l - 1) << t_i))
                            new_state = state - s_bit - t_bit
                            new_state |= (s_bit >> s_i) << t_i
                            new_state |= (t_bit >> t_i) << s_i
                            if new_state not in states:
                                states[new_state] = 0
                                queue.append(new_state)

        
    print(len(states))










if __name__ == '__main__':
    main()