#include <iostream>
using namespace std;

int main()
{
	int n;
	cin >> n;
	
	if (n == 0)
		cout << 1;
	else
	for (int i = 31; i >= 0; i--)
		if (n & (1 << i)) {
 			cout << i+1;
			break;
		}
		
	
	return 0;
}