#include <iostream> #include <fstream> #include <iomanip> #include <string> #include <vector> #include <list> #include <set> #include <utility> #include <queue> #include <iterator> #include <algorithm> #include <cstdlib> #include <cmath> #include <cstdio> #include <cstring> using namespace std; #define DMAX 17 #define MOD 1999999973 #define ll long long #define ull unsigned long long int main() { // freopen("input.txt", "r", stdin); // freopen("output.txt", "w", stdout); int n, cnt = 0; scanf("%d", &n); while (n % 2 == 1){ n/= 2; cnt++; } printf("%d", cnt); return 0; }