xxx定律#

#include<iostream>
using namespace std;
#include<vector>
int main(){
    vector<int>goin;
    int a=1;
    while(cin>>a){
       
        goin.emplace_back(a);
    }
    vector<int>::iterator iter=goin.begin();
    for(;iter!=goin.end();iter++){
        int x;
        x=*iter;
        if(x==0){break;}
        int time=0;//次数
        while(x!=1){
        if(x%2==0)x=x/2;
        else x=(3*x+1)/2;
            time++;
        }
        cout<<time<<endl;
       
    }
    
}