过了，程序仅供参考
```cpp
#include<bits/stdc++.h>
using namespace std;
int main()
{
int n,a[101];
cin>>n;
for(int i=n;i>=0;i--)
cin>>a[i];
for(int i=n;i>=0;i--)
{
if(a[i]==0) continue;
if(a[i]>0&&i!=n) cout<<"+";
if(a[i]<0)
{
cout<<"-";
a[i]*=-1;
}
if(a[i]!=1) cout<<a[i];
if(a[i]==1&&i==0) cout<<a[i];
if(i>1) cout<<"x^"<<i;
else if(i==1) cout<<"x";
}
}
```
by czk15 @ 2017-08-04 21:02:36