#include <iostream>
using namespace std;

int main() {

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

    // 输出字符串的长度
    int len = 0;
    
    for (char *p = str; (*p) != '\0'; p++)
        len++;
    cout << len;
    return 0;
}