#include <iostream>
#include <iterator>
using namespace std;

int main() {

    char str[100] = { 0 };
    cin.getline(str, sizeof(str));

    // write your code here......
    char *p = begin(str);
    int len  = 0;
    while((*p)!='\0'){
        p++;
        len++;
    }

    cout << len << endl;

    return 0;
}