#include <bits/stdc++.h>

using namespace std;

string str;
int cnt = 0;

int main() {
    getline(cin, str);
    int n = str.length();
    for (int i = 0; i < n; i++)
        if (str[i] != ' ' && str[i] != '\n')
            cnt++;
    cout << cnt << endl;
}