s = raw_input()
count = 1

def look_for_kai(st):
    global count
    left = 0
    right = len(st) - 1
    while (left >= right):
        if(st[:left+1] == st[right:]):
            count+=1
            look_for_kai(st[left+1:right])
        left += 1
        right -= 1

look_for_kai(s)
print count%1000000007