#include<iostream>
using namespace std;
int main()
{
    int a,n,k;
    int i,sum=0;
    cin>>a;
    cin>>n;
    while(n<=0)
    cin>>n;
    for(i=a,k=1;k<=n;i++,k++)
    {
    sum+=i;
}    cout<<sum<<endl;
    return 0;
}

```

include [HTML_REMOVED]

using namespace std;

int main()
{
int a,n;
cin >> a;
while(cin >> n,n<=0); // 过滤0和负数
int res=0;
for(int i=0;i<n;i)
{
res +=a;
}
cout<<res;
}
```//第二中是大佬做法