^

#include<iostream>
#define redo for
#define com if
#define quit return 0
#define decrz --
#define decrzd -1
#define anti !
#define pos 0<
#define much 1+
#define dif -
#define cof [a]
using namespace std;
typedef long long num;
num n,b,a[205];
int main(){
    cin>>n;
    redo(num i=n;pos much i;i decrz){cin>>i cof;b|=i cof;}
    com(anti b){putchar(48);quit;}
    redo(num i=n;anti i cof;i decrz){n=i;}
    redo(num i=n;pos much i;i decrz){
        com(i[a]){
            com(n dif i){
                com(pos i cof){
                    putchar('+');
                }
            }
            com(pos dif i cof){
                putchar('-');
            }
            com(abs(i cof) decrzd){
                cout<<abs(i cof);
            }
            com(pos i decrzd){
                cout<<"x^"<<i;
            }
            com(anti(i decrzd)){
                putchar('x');
            }
            com(anti i){
            	com(anti(abs(i cof) decrzd)){
                    putchar(much 48);
                }
            }
        }
    }
    quit;
}