谢谢

#include <iostream>
#include <cstdio>
#include <algorithm>
using namespace std;

#define LL long long

int read() {
	int x = 0;
	int b = 1;
	char c = getchar();
	while(c > '9' || c < '0') {
		if(c == '-') b = -1;
		c = getchar();
	}
	while(c <= '9' && c >= '0') {
		x = x * 10 + (c - '0');
		c = getchar();
	}
	return x * b;
}

void write(int x) {
	if(x < 0) x *= -1, putchar('-');
	if(x > 9) write(x / 10);
	putchar(x % 10 + '0');
}

int x;
int t;

int main()
{
	x = read();
	if(x == 0) {
		t = read();
		cout << t;
		return 0;
	}
	for(int i = x; i >= 0; i --) {
		t = read();
		if(i == x) {
			if(i == 1) {
				if(t == 1) cout << "x";
				else if(t == -1) cout  << "-x";
				else cout << t << "x";
			}
			else if(t != 0) {
				if(t == 1) cout << "x^" << i;
				else if(t == -1) cout  << "-x^" << i;
				else cout << t << "x^" << i;
			}
			continue;
		}
		if(i == 0) {
			if(t > 0) cout << '+';
			cout << t;
			continue;
		}
		if(i == 1) {
			if(t == 0) continue;
			if(t > 0) cout << '+';
			if(t == 1) cout << "x";
			else if(t == -1) cout  << "-x";
			else cout << t << "x";
			continue;
		}
		if(t != 0) {
			if(t > 0) cout << '+';
			if(t == 1) cout << "x^" << i;
			else if(t == -1) cout  << "-x^" << i;
			else cout << t << "x^" << i;
		}
	}
	
	
	return 0;
}