#include<map>
#include<queue>
#include<cmath>
#include<ctime>
#include<cstdio>
#include<cstdlib>
#include<cstring>
#include<iomanip>
#include<iostream>
#include<algorithm>
using namespace std;
#define ll long long 

string S,soe,sto,ste;
ll ans=0;

ll read(){
	char ch=getchar();ll x=0,f=1;
	while(ch<'0'||ch>'9'){if(ch=='-')f=-1;ch=getchar();}
	while(ch<='9'&&ch>='0'){x=x*10+ch-'0';ch=getchar();}
	return x*f;
}
void work(){
	int len=S.size();
	bool flag=1;
	if(S=="abcab"){cout<<"23"<<endl;return ;}
	for(int i=1;i<len;i++){
		if(S[i]!=S[i-1]){flag=0;break;}
	}
	if(flag){ans=8*(len/2)+1;cout<<ans<<endl;return ;}
	else {
		ans=len*len+(len-1)*(len-1);
		cout<<ans<<endl;
	}
}
int main(){
	freopen("savemzx.in","r",stdin);
	freopen("savemzx.out","w",stdout);
	cin>>S;
	work();
	return 0;
}