Untitled

#include <iostream>
using namespace std;

int abo(int a) {
	int b=0;
	if (a == 0) {
		return 1;
	}
	while(a > 0) {
		a /= 10;
		b++;
	}
	return b;
};

int main()
{
	int a;
	cin >> a;
	cout << abo(a);
}