100pts,WASubtask #1#1,求调

Code

#include <stdio.h>
int n, a[107];
int main()
{
    scanf("%d", &n);
    for(int i = 1; i <= n + 1; i++) scanf("%d", a + i);
    if(a[1] < 0 and a[1] != -1) printf("%dx^%d", a[1], n);
    else if(a[1] < 0 and a[1] == -1) printf("-x^%d", n);
    else if(a[1] > 0 and a[1] != 1) printf("%dx^%d", a[1], n);
    else if(a[1] > 0 and a[1] == 1)printf("x^%d", n);
    bool flag = false;
    if(a[1]) flag = true;
    for(int i = 2; i < n; i++) 
    {
        if(flag)
        {
            if(a[i] < 0 and a[i] != -1) printf("%dx^%d", a[i], n - i + 1);
            else if(a[i] < 0 and a[i] == -1) printf("-x^%d", n - i + 1);
            else if(a[i] > 0 and a[i] != 1) printf("+%dx^%d", a[i], n - i + 1);
            else if(a[i] > 0 and a[i] == 1)printf("+x^%d", n - i + 1);  
        }
        else
        {
            if(a[i] < 0 and a[i] != -1) printf("%dx^%d", a[i], n - i + 1);
            else if(a[i] < 0 and a[i] == -1) printf("-x^%d", n - i + 1);
            else if(a[i] > 0 and a[i] != 1) printf("%dx^%d", a[i], n - i + 1);
            else if(a[i] > 0 and a[i] == 1)printf("x^%d", n - i + 1);
        }
        if(a[i]) flag = true;
    }
    if(a[n] < 0 and a[n] != -1) printf("%dx", a[n]);
    else if(a[n] == -1) printf("-x");
    else if(a[n] > 0 and a[n] != 1) printf("+%dx", a[n]);
    else if(a[n] == 1) printf("+x");
    n++;
    if(a[n] < 0) printf("%d", a[n]);
    else if(a[n] > 0) printf("+%d", a[n]);
    return 0;
}