#include <bits/stdc++.h>
using namespace std;

int main() {
    vector<string> strings;
    string str;
    while(cin >> str) {
        strings.push_back(str);
        // 读到换行符，终止循环
        if(getchar() == '\n') {
            break;
        }
    }
    cout << strings[strings.size()-1].length();
    return 0;
}