import sys
input = sys.stdin.readline

S=input().strip()

E=[[] for i in range(len(S)+1)]


for i in range(len(S)):
    E[i].append(i+1)

    for j in range(1,len(S)):
        if i-j>=0 and i+j<len(S):
            if S[i-j]==S[i+j]:
                E[i-j].append(i+j+1)
            else:
                break
        else:
            break

for i in range(1,len(S)):
    if S[i]==S[i-1]:
        E[i-1].append(i+1)

        for j in range(1,len(S)):
            if i-1-j>=0 and i+j<len(S):
                if S[i-1-j]==S[i+j]:
                    E[i-1-j].append(i+j+1)
                else:
                    break
            else:
                break

DP=[[0]*5 for i in range(len(S)+1)]
DP[0][0]=1


for i in range(len(S)+1):
    for j in range(4):
        if DP[i][j]==0:
            continue

        if j==0 or j==1 or j==3:
            for to in E[i]:
                DP[to][j+1]+=DP[i][j]
        else:
            for to in range(i+1,len(S)+1):
                DP[to][j+1]+=DP[i][j]

print(DP[-1][-1])