pta basin 1001

#include <cstdio> #include <cstring> #include <string> #include <algorithm> #include <queue> #include <map> #include <cmath> #include <iostream> #include <set> #include <vector> #define INF 0x3f3f3f3f using namespace std; const int N=1e5+5; typedef long long ll; int main() { int n; scanf("%d",&n); int num=0; while(n!=1) { if(n&1) n=(3*n+1)/2; else n/=2; num++; } printf("%d\n",num); }