#include<bits/stdc++.h>
using namespace std;
#define int long long
signed main(){
    freopen("movement.in","r",stdin);
    freopen("movement.out","w",stdout);
    string a;
    cin>>a;
    int s=0;
    int y=0;
    int l=0;
    int e=0;
    for(int i = 0;i<a.length();i++){
        if(a[i]=='1')y++;
        if(a[i]=='0')l++;
        if(a[i]=='2')e++;
        if(a[i]=='3')s++;
    }
    if(y==0 && e==0){
        cout<<a.length()<<endl;
        return 0;
    }
    if(e==0 && s==0){
        cout<<1<<endl;
        return 0;
    }
    return 0;
}