#include<bits/stdc++.h>
using namespace std;
const int ext=500006;
string word;
int res, ps[ext];
bool found;

bool pattern(int k){
    for(int i=0; i<word.size(); i++)
        if(word[i]!=word[i%k])
            return 0;
    return 1;
}

int main(){
    cin>>word;
/*    for(int i=1; i<word.length(); i++){
        found=0;
        for(int j=ps[i-1]; !found; j=ps[j]){
            if(word[j+1]==word[i]){
                found=1;
                ps[i]=j+1;
            }
            else if(j==0){
                found=1;
                ps[i]=0;
                if(word[0]==word[i])
                    ps[i]=1;
            }
        }
*/    }
    res=word.length();
/*    for(int i=ps[word.length()-1]; i>0; i=ps[i])
        if(pattern(i))
            res=i;
    cout<<res;
*/    return 0;
}