动态申请内存字符串hash模板

struct myhash
{
    int *s;
    ull *h,*qp;
    ll *p,len,*val;
    void init(vector<int> &path)
    {
        len=path.size();
        for(int i=0;i<path.size();i++)
        {
            s[i+1]=path[i];
        }
        h[0]=val[0]=0;
        qp[0]=p[0]=1;
        for(int i=1;i<=len;i++)
        {
            qp[i]=qp[i-1]*base;
            h[i]=h[i-1]*base+s[i];
        }
    }
    ull get_hash(int l,int r)
    {
        return h[r]-h[l-1]*qp[r-l+1];
    }
    myhash(int n)
    {
        s=new int[n];
        h=new ull[n];qp=new ull[n];
        p=new ll[n];val=new ll[n];
    }
    ~myhash()
    {
        delete []s;
        delete []h;delete []qp;
        delete []p; delete []val; 
    }
};