tijie

#include<bits/stdc++.h>
using namespace std;
int a[100001];
int main(){
    int n;
    cin>>n;
    for(int i=n+1;i>=1;i--){
        cin>>a[i];
    }
    for(int i=n+1;i>=1;i--){
        if(a[i]==0) continue;
        if(i==n+1){
            if(a[i]==-1) cout<<"-x^"<<n;
            else if(a[i]==1) cout<<"x^"<<n;
            else cout<<a[i]<<"x^"<<n;
        }else if(i==1){
            if(a[i]>0) cout<<"+"<<a[i];
            else cout<<a[i];
        }else if(i==2){
        	if(a[i]==1) cout<<"+x";
        	else if(a[i]==-1) cout<<"-x";
        	else{
        		if(a[i]>0) cout<<"+"<<a[i]<<"x";
        		else cout<<a[i]<<"x";
			}
		}
		else{
            if(a[i]>0){
                if(a[i]==1) cout<<"+x^"<<i-1;
                else cout<<"+"<<a[i]<<"x^"<<i-1;
            }
            else{
                if(a[i]==-1) cout<<"-x^"<<(i-1);
            	else cout<<a[i]<<"x^"<<i-1;
            }
        }
    }
    return 0;
}