暴力 题目简直坑
#include<iostream>
using namespace std;
int main(){
int x,y,max,count,k;
while(scanf("%d %d",&x,&y)!=EOF){
cout<<x<<" "<<y<<" ";
max=1;
if(x>y){
int temp=x;
x=y;
y=temp;
}
for(int i=x;i<=y;++i){
k=i;
count=1;
while(k!=1){
++count;
if(k%2) k=3*k+1;
else k/=2;
}
if(count>max)
max=count;
}
cout<<max<<endl;
}
return 0;
}