题解 | #xxx定律#

#include<bits/stdc++.h>
using namespace std;
int main() {
	int n;
	while(scanf("%d",&n)!=EOF) {
		int count=0;
		while(n!=1) {
			if(n%2==0) {
				n=n/2;
				count++;
			} else {
				n=(3*n+1)/2;
				count++;
			}
		}
		printf("%d\n",count);
	}
	return 0;
}