//#include <atcoder/all>
#include <bits/stdc++.h>
using namespace std;
//using namespace atcoder; //https://github.com/atcoder/ac-library

#define rep(i, l, r) for (int i = (l); i < (r); i++)
#define bit(n, k) ((n >> k) & 1)
#define all(v) (v).begin(), (v).end()
typedef long long ll;
typedef pair<int, int> pii;

pii get_inv(pii x, int n){
    if(x.first)return x;
    return {0,(n-x.second)%n};
}

void test_case(int tt){
    string s; cin>>s;
    int n=(int)s.length();
    vector<int> fail(n,0);
    for(int i=1,j=0; i<n; i++){
        while(j>0 && s[i]!=s[j])j=fail[j-1];
        if(s[i]==s[j])fail[i]=++j;
    }
    int pow=1, k=fail[n-1]; // n*(i-1)/i <=k
    for(ll i=2; (i-1)*n<=k*i; i++){
        if(n%i==0 && n*(i-1)==k*i)pow=i;
    }
    s=s.substr(0,n/pow);
    n=(int)s.length();
    fail=vector<int>(n,0);
    for(int i=1,j=0; i<n; i++){
        while(j>0 && s[i]!=s[j])j=fail[j-1];
        if(s[i]==s[j])fail[i]=++j;
    }
    string t=s;
    reverse(all(t));
    int f=(t.compare(s)==0);
    t+=t;
    vector<vector<int>> rotation(2,vector<int>(n,0));
    rotation[0][0]=1;
    k=-1;
    for(int i=0, j=0; i<2*n-1; i++){
        while(j>0 && t[i]!=s[j])j=fail[j-1];
        if(t[i]==s[j]){
            if(j==n-1){
                rotation[1][i-n+1]=1;
                k=i-n+1;
                break;
            }
            else j++;
        }
    }
    puts("1");
    return;
    int m; cin>>m;
    vector<pii> ps(m+1); // inv|move
    ps[0]={0,0};
    rep(i,0,m){
        ps[i+1]=ps[i];
        char c; cin>>c;
        if(c=='I'){
            ps[i+1].first=1-ps[i+1].first;
            ps[i+1].second=(n-ps[i+1].second)%n;
        }
        else{
            int move; cin>>move;
            if(c=='L')move=n-move;
            ps[i+1].second=(ps[i+1].second+move)%n;
        }
        if(f){
            if(ps[i+1].first){
                ps[i+1].first=0;
                ps[i+1].second=(n-ps[i+1].second)%n;
            }
        }
    }
    ll ans=0;
    rep(i,0,m){
        pii x=ps[i+1];
        pii y=get_inv(x,n);
        if(!x.first){
            ans+=rotation[0][(n-x.second)%n];
        }
        else{
            if(k>-1)
                ans+=rotation[0][(k-x.second+n)%n];
        }
        if(!f){
            if(!x.first){
                if(k>-1)
                    ans+=rotation[1][(k-x.second+n)%n];
            }
            else{
                if(k>-1)
                    ans+=rotation[1][(x.second-k+n)%n];
            }
        }
        rotation[y.first][y.second]++;
    }
    cout<<ans<<'\n';
}

int main()
{
    ios::sync_with_stdio(false);
    cin.tie(NULL);

    int t = 1;
    //cin>>t;
    rep(i, 1, t + 1)
    {
        test_case(i);
    }
    return 0;
}