为什么超时了？？``` #include<bits/stdc++.h> using namespace std; int main(){ int n; cin>>n; while(n!=1){ if(n%2==0){ cout<<n<<"/2="<<n/2<<endl; n=n/2; } else{ cout<<n<<"3+1="<<n3+1<<endl; n=n*3+1; } } cout<<"End"; return 0; }