rt

#include <bits/stdc++.h>
using namespace std;
const int N=105;
int n;
int a[N];
int main(){
	scanf("%d",&n);
	for(int i=n;i>=0;i--){
		scanf("%d",&a[i]);
	}
	if(n==0)	cout<<a[0];
	else{
		for(int i=n;i>=0;i--){
			if(i==n){
				if(a[i]==0)	continue;
				if(a[i]==1){
					putchar('x');
					putchar('^');
					printf("%d",i);
				}
				else if(a[i]==-1){
					putchar('-');
					putchar('x');
					putchar('^');
					printf("%d",i);
				}
				else{
					printf("%d",a[i]);
					putchar('x');
					putchar('^');
					printf("%d",i);
				}
				
			}
			else if(i==1){
				if(a[i]==0)	continue;
				if(a[i]<0){
					if(a[i]==-1){
						puts("-x");
					}
					else{
						printf("%d",a[i]);
						printf("x");
					}
				}
				else{
					if(a[i]==1)	{
						puts("+");
						putchar('x');
					}
					else{
		                printf("+%d",a[i]);
		                putchar('x');
		            }    
            	}
			}
			else if(i==0){
				if(a[i]==0)	continue;
				if(a[i]<0){
					printf("%d",a[i]);
				}
				else{
					putchar('+');
					printf("%d",a[i]);
				}
			}
			else{
				if(a[i]==0)	continue;
				if(a[i]<0){
					if(a[i]==-1){
						printf("-x^%d",i);
					}
					else{
						printf("%dx^%d",a[i],i);
					}
				}
				else{
					if(a[i]==1)	printf("+x^%d",i);
					else{
						printf("+%d",a[i]);
						putchar('x');
						putchar('^');
						printf("%d",i);
					}
					
				}
			}
		}
	}
	return 0;
}