题解 | #xxx定律#

#include <stdio.h>
#include <string.h>

int func(int n,int count) {
	if(n==1) return count;
	else if(n%2==0) {
		return func(n/2,count+1);
	} else {
		return func((3*n+1)/2,count+1);
	}
}

int main() {
	int n;
	while(scanf("%d",&n)!=EOF) {
		printf("%d\n",func(n,0));
	}
	return 0;
}