문제
풀이
#include <iostream>
using namespace std;
void solve(void) {
unsigned long long n; cin >> n;
int ans = 64;
while (!(n & 1)) {
n >>= 1;
ans--;
}
cout << ans;
}
int main(void) {
ios::sync_with_stdio(false);
cin.tie(nullptr);
solve();
return 0;
}