10pts求调

#include <bits/stdc++.h>

using namespace std;

long long n;
long long a[110];

int main( ) {
	scanf("%lld" , &n);
	
	for (int i = n ; i >= 0 ; i--) {
		scanf("%lld" , &a[i]);
	}
	
	for (int i = 1 ; i >= 0 ; i--) {
		if (a[i] == 0) continue;
		
		if (i == n) {
			if (a[i] < 0) cout << "-";
		} else {
			if (a[i] < 0) cout << "-";
			if (a[i] > 0) cout << "+";
		}
		
		if ((a[i] == 1 || a[i] == -1) && i != 0) ;
		else cout << fabs(a[i]);
		
		if (i == 0) ;
		else if (i == 1) cout << "x";
		else cout << "x^" << i;
	}
	return 0;
}