代码如下：

#include <string>
#include <iostream>
using namespace std;
int main()
{
    int n;
    cin >> n;
    string a;
    cin >> a;
    int i = 0, j = 0;
    while (a[i])
    {
        i++;
    }
        while (a[j])
        {
            i--;
            if (a[j] != '0')
            {
                cout << a[j] << "*" << n << "^" << i << '+';
            }
            j++;
        }
        cout << "\b ";
}

结果显示：

Wrong Answer. wrong answer Too long on line 1.

和答案也比对了，但就是提示我答案过长，求教