B1001 1001 害死人不偿命的(3n+1) 猜想
#include<stdio.h> int main() { int n,countnum=0; scanf("%d",&n); while(n!=1) { if(n%2==0) { n=n/2; } else { n=(3*n+1)/2; } countnum++; } printf("%d",countnum); return 0; }
原文：https://www.cnblogs.com/tingxilin/p/13139787.html
