A7825.角谷猜想

#include <bits/stdc++.h>
using namespace std;
int main()
{
int n;
cin>>n;
for(int i=n;i>=1;i--)
{
if(n1)
{
continue;
}
if(n%21)
{
cout<<n<<"3+1="<<n3+1<<endl;
n=n*3+1;
}
else if(n%2==0)
{
cout<<n<<"/2="<<n/2<<endl;
n=n/2;
}
}
cout<<"End";
return 0;
}