#include <iostream>
#include <string>

using namespace std;

string str;
bool flag[4];
int n;

int main () {
    
    freopen ("movement.in", "r", stdin);
    freopen ("movement.out", "w", stdout);
    
    cin >> str;
    n = str.size();
    for (int i = 0; i < str.size(); i++) {
        flag[str[i] - '0'] = true;
    }
    
    if (!flag[1] && !flag[2]) {
        cout << n << endl;
        return 0;   
    }
    if (!flag[2] && !flag[3]) {
        cout << 1 << endl;
    }
    
    return 0;
}