题解 | xxx定律
#include <stdio.h>
int main() {
int n,i=0;
while(scanf("%d",&n)!=EOF){
if(n==1){
i=0;
printf("%d\n",i);
break;
}
while(n!=1){
if(n%2==0)
n/=2;
else n=(3*n+1)/2;
i++;
}
printf("%d\n",i);
}
return 0;
}
