#include <algorithm>
#include <iostream>
#include <stdio.h>
#include <vector>
#include <map>
#include <stack>
#include <queue>
#include <deque>
#include <string>
using namespace std;
int main() {
//freopen("input.txt", "rt", stdin);
string s;
cin >> s;
printf("%d", s.length());
return 0;
}