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## 上面赞数最高的答案跑这个是+x

~~~~结果还AC了(0_0)~~~~

最后附上我的菜鸡代码，虽然很长但实测没有bug

#include<stdio.h>

int main(){

	int n,flag=0;
    int a[100];
    scanf("%d",&n);
    for(int i=n;i>=0;i--){
        if((i==n)&&(n>1)){
            scanf("%d",&a[i]);
            if(a[i]>0){
                flag=1;
                if(a[i]==1)printf("x^%d",i);
                else printf("%dx^%d",a[i],i);
            }
            else if(a[i]<0){
                flag=1;
                if(a[i]==-1)printf("-x^%d",i);
                else printf("%dx^%d",a[i],i);
            }
        }
        else if(i>1&&i<n){     
            scanf("%d",&a[i]);
            if(a[i]>0){
                if(a[i]==1&&flag==1)printf("+x^%d",i);
                else if(a[i]>1&&flag==1) printf("+%dx^%d",a[i],i);
                else if(flag==0)printf("%dx^%d",a[i],i);
                flag=1;
            }
            else if(a[i]<0){
                flag=1;
                if(a[i]==-1)printf("-x^%d",i);
                else printf("%dx^%d",a[i],i);
            }
        }
        else if(i==1&&n>1){
            scanf("%d",&a[i]);
            if(a[i]>0){
                if(a[i]==1&&flag==1)printf("+x");
                else if(flag==0&&a[i]==1)printf("x");
                else if(flag==0&&a[i]>1)printf("%dx",a[i]);
                else if(a[i]>1&&flag==1) printf("+%dx",a[i]);
                flag=1;
            }
            else if(a[i]<0){
                flag=1;
                if(a[i]==-1)printf("-x");
                else printf("%dx",a[i]);
            }
        }
        else if(i==0&&n>1){
            scanf("%d",&a[i]);
            if(a[i]!=0&&flag==0)printf("%d\n",a[i]);
            else if(flag==1&&a[i]<0)printf("%d\n",a[i]);
            else if(flag==1&&a[i]>0)printf("+%d\n",a[i]);
            else printf("\n");
        }
        else if(n==1&&i==1){
            scanf("%d",&a[i]);
            if(a[i]>0){
                flag=1;
                if(a[i]==1)printf("x");
                else printf("%dx",a[i]);
            }
            else if(a[i]<0){
                flag=1;
                if(a[i]==-1)printf("-x");
                else printf("%dx",a[i]);
            }
        }
        else if(n==0){
            scanf("%d",&a[i]);
            printf("%d",a[i]);
        }
    }
  }