#include<string>
#include<cmath>
#include<cstdlib>

int main()
{
    long long n;
    
    if(!(std::cin >> n))
    {
        std::cout << "Invalid input" << "\n";
        return 0;
    }
    if(n == 0)
    {
        std::cout<< 1 <<"\n";
        return 0;
    }
    long long abs_n = std::abs(n);
    int count = 0;
    while (abs_n>0)
    {
        abs_n/=10;
        count++;
    }
    std::count << count << "\n"
    return 0;
}