#include<bits/stdc++.h>
using namespace std;
int n,a[105];
int main(){
    cin>>n;
    for(int i=1;i<=n+1;i++){
        cin>>a[i];
        if(!a[i])
            continue;
        if(a[i]<0){
            cout<<'-';
            a[i]=abs(a[i]);
        }else if(a[i]>0 && i!=1)
            cout<<'+';
        if(a[i]!=1 && i!=n+1)
            cout<<a[i];
        if(i==n+1){
            cout<<a[i];
            continue;
        }
        if(i!=n){
            cout<<"x^"<<n-i+1;
        }
    }
    return 0;
}