#include <bits/stdc++.h>

using namespace std;
ifstream f("pscpld.in");
ofstream g("pscpld.out");
char s[1000001];
int main()
{//char ;
int nr,i,k,j,ok;
f>>s;
nr=strlen(s);
k=2;
while(k<strlen(s)-3)
{
    for(i=0;i<strlen(s)-k+1;i++){ok=1;
    if(k%2==0)
            {for(j=i;j<=i+k-1;j++)if(s[j]!=s[i+k-j+1])ok=0;
                if(ok==1)nr++;}
    else {for(j=i;j<=i+k-1;j++)if(s[j]!=s[i+k-j+1]||s[(i+k+1)/2]!=s[(i+k+1)/2])ok=0;
                if(ok==1)nr++;}
}k++;}
g<<nr;
f.close();
g.close();

    return 0;
}