#include <iostream>
#include <cstdint>
using namespace std;
int main(void) {
uint32_t N;
cin >> N;
uint32_t lar = N;
uint32_t shift = 0;
uint32_t temp = N;
for (int i = 1; i < 30; i++)
{
uint32_t index = (temp & 1);
temp = ((temp >> 1) | (index << 29));
if (temp > lar)
{
lar = temp;
shift = i;
}
}
cout << shift;
}
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