题解 | #魔法数字变换#

#include <stdio.h>

int main() {
	int n = 0, count = 0;
	scanf("%d", &n);

	while (n != 1) {
		if (n % 2 == 0) {
			n /= 2;
			count++;
		}
		else {
			n = n * 3 + 1;
			count++;
		}
	}
	printf("%d", count);

	return 0;
}