subtank 1 AC,subtank 0 30pts

代码:

#include<bits/stdc++.h>
using namespace std;
int n,x,a[10005];
bool kkk(int i)
{
    if(i==n)return false;
    for(int j=1;j<n-i+1;j++)
    {

        if(a[j]!=0)return true; 
    }

    return false;
}
void out(int i,int j)
{
    if(i==0)return ;
    if(abs(j)==0)
    {
        if(i<0)cout<<"-";
        else if(kkk(j))cout<<"+";
        printf("%d",i);
        return ;
    }
    if(abs(j)==1&&abs(i)==1)
    {
        if(i<0)cout<<"-";
        else if(kkk(j))cout<<"+";
        printf("x");
        return ;
    }
    if(abs(j)==1)
    {
        if(i<0)cout<<"-";
        else if(kkk(j))cout<<"+";
        printf("%dx",i);
        return ;
    }
    if(abs(i)==1)
    {
        if(i<0)cout<<"-";
        else if(kkk(j)) cout<<"+";
        printf("x^%d",j);
        return ;
    }
    if(i<0)printf("-");
    else if(kkk(j))printf("+");
    printf("%dx^%d",abs(i),j);
}
int main()
{   
    cin>>n;
    for(int i=n;i>=0;i--)
    {   
        cin>>x;
        a[n-i+1]=x;
        out(x,i);
    }
    return 0;
}

看着好像也没啥问题啊