0分, Help!

#include <bits/stdc++.h>
using namespace std;
int main(){
    long long a;
    cin >> a;
    if (a % 2){
        cout << a;
        a = a * 3 + 1;
        cout << "*3+1=" << a << endl;
    } else {
        cout << a;
        a = a / 2;
        cout << "/2=" << a << endl;
    }
    while (a != 1){
        cout << a << "/2=" << (a /= 2) << endl;
    }
    cout << "End" << endl;
    return 0;
}