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#include <message.h>
#include "palindromy.h"

#include <iostream>
#include <algorithm>
#include <vector>
#include <string>
#include <map>
#include <set>
#include <queue>
#include <stack>
#include <cmath>
#include <cassert>
#include <cstring>
#include <bitset>
#include <sstream>
//#include <bits/stdc++.h>
#include <ext/numeric>
using namespace std ;
using namespace __gnu_cxx ;
typedef long long LL ;
typedef pair<int,int> PII ;
typedef vector<int> VI ;
const int INF = 1e9+100 ;
const LL INFLL = (LL)INF*INF ;
#define REP(i,n) for(int i=0;i<(n);++i)
#define ALL(c) c.begin(),c.end()
#define FOREACH(i,c) for(auto i=(c).begin();i!=(c).end();++i)
#define CLEAR(t) memset(t,0,sizeof(t))
#define PB push_back
#define MP make_pair
#define FI first
#define SE second

template<class T1,class T2> ostream& operator<<(ostream &s, const pair<T1,T2> &x) { return s << "(" << x.FI << "," << x.SE << ")" ;}
template<class T>           ostream& operator<<(ostream &s, const vector<T>   &t) { FOREACH(it, t) s << *it << " " ; return s ; }
template<class T>           ostream& operator<<(ostream &s, const set<T>      &t) { FOREACH(it, t) s << *it << " " ; return s ; }
template<class T1,class T2> ostream& operator<<(ostream &s, const map<T1, T2> &t) { FOREACH(it, t) s << *it << " " ; return s ; }

template<class T1, class T2> T1 conv(const T2 &x) {
	stringstream sss ; sss << x ; T1 y ; sss >> y ; return y ;
}

template<class T> void _debug(bool printName, const char* s, const T &x) { if(printName) cerr << s << "=" ; cerr << x << endl ; }
void _debug(bool, const char* s, const char*) {
	for(;*s;s++) if(*s!='"') { cerr << *s ; } cerr << endl ;
}
template<class T, class... R> void _debug(bool printName, const char* s, const T &x, R... y) {
	bool o=0, str=(*s=='"') ;
	for(; o || *s!=',' ; s++) if(*s=='"') o=!o ; else if(printName||str) cerr<<*s ;
	for(s++;*s && *s==' '; s++) ;
	if(!str) { if(printName) cerr << "=" ; cerr << x ; if(*s!='"' && printName) cerr << "," ; } cerr << " " ;
	_debug(printName, s, y...) ;
}

template<class T>             void _coord(const T &x)         { cerr << "[" << x << "]" ;             }
template<class T, class... R> void _coord(const T &x, R... y) { cerr << "[" << x << "]" ; _coord(y...) ; }

template<class T, class I>             void _val(T &t, const I &i)         { cerr << t[i] ; }
template<class T, class I, class... J> void _val(T &t, const I &i, J... j) { _val(t[i], j...) ; }


#define CERR(...)     if(DFLAG) _debug(0, #__VA_ARGS__, __VA_ARGS__)
#define DEBUG(...)    if(DFLAG) _debug(1, #__VA_ARGS__, __VA_ARGS__)	
#define DARRAY(t,...) if(DFLAG) { cerr << #t ; _coord(__VA_ARGS__) ; cerr << " = " ; _val(t,__VA_ARGS__) ; cerr << endl ; }
#define DFLAG 0

////////////////////////////////////////////////////////////////////////////////

// W TEJ SEKCJI KOD JAKUBA RADOSZEWSKIEGO, DOSTĘPNY POD:
// http://www.mimuw.edu.pl/~jrad/teksty/manacher.cpp
// Lekko poprawiony.

//Palindromy parzyste
vector<int> Manacher1(const string &x)
{
  vector<int> R;
  R.reserve(x.size()) ;
  R.push_back(0);
  int i = 1, j = 0;
  while (i <= x.size() - 1)
  {
    while (x[i - j] == x[i + j + 1])
      j++;
    R.push_back(j);
    int k = 1;
    while (R[i - k] != R[i] - k && k <= j)
    {
      R.push_back(min(R[i - k], R[i] - k));
      k++;
    }
    j=max(j - k, 0); i += k;
  }
  return R;
}

//Palindromy nieparzyste
vector<int> Manacher2(const string &x)
{
  vector<int> R;
  R.reserve(x.size()) ;
  R.push_back(0);
  int i = 1, j = 0;
  while (i <= x.size() - 1)
  {
    while (x[i - j - 1] == x[i + j + 1])
      j++;
    R.push_back(j);
    int k = 1;
    while (R[i - k] != R[i] - k && k <= j)
    {
      R.push_back(min(R[i - k], R[i] - k)); k++;
    }
    j=max(j - k, 0); i += k;
  }
  return R;
}
//////////////////////////////////////////////////////////

int main()
{
	//ios_base::sync_with_stdio(0) ;
	if(MyNodeId()!=0) return 0 ;
	
	int n = GetLength() ;
	string s ; s.reserve(n+2) ;
	s += '$' ;
	REP(i, n) s += GetLetter(i) ;
	s += '#'; 					// '$' i '#' - specjalne znaki
	
	VI tmp = Manacher1(s) ;
	DEBUG(tmp) ;
	LL ret = accumulate(ALL(tmp), (LL)0) ;
	   tmp = Manacher2(s) ;
	DEBUG(tmp) ;
	ret   += n+accumulate(ALL(tmp), (LL)0) ;
	cout << ret << endl ;
}