#include<iostream>
#include<iomanip>
#include<cstdio>
#include<cstring>
#include<algorithm>
#include<cmath>
#include<cstdlib>
using namespace std;
int main(){
	int n;
	cin>>n;
	for(int i = n;i >= 0;--i){
		int a;
		cin>>a;
		if(a == 0){
			continue;
		}
		if(a < 0){
			cout<<"-";
		}
		else if(i != n and a > 0){
			cout<<"+";
		}
		if(abs(a) == 1 and i != 0){
			cout<<"x^"<<i;
			continue;
		}
		if(i == 0){
			cout<<a;
			continue;
		}
		cout<<abs(a)<<"x^"<<i;
	}
	return 0;
}