#include<iostream> using namespace std; int a[110]; int main(){ int n; cin >> n; for(int i = 1;i <= n + 1;i ++ ){ cin >> a[i]; } //处理第一位 if(n!=1){ if(a[1]==1) cout <<"x^"<<n; else if(a[1]==-1) cout <<"-x^"<<n; else if(a[1] > 0 ) cout <<a[1]<<"x^"<<n; else if(a[1] < 0 ) cout <<a[1]<<"x^"<<n; } else { if(a[1]==1) cout <<"x"; else if(a[1]==-1) cout <<"-x"; else if(a[1] > 0 ) cout <<a[1]<<"x"; else if(a[1] < 0 ) cout <<a[1]<<"x"; } //处理中间位 for(int i = 2;i <= n-1 ;i ++ ){ if (a[i] != 0){ if(a[i]==1) cout <<"+x^"<<n-i+1; else if(a[i]==-1) cout <<"-x^"<<n-i+1; else{ if(a[i]>0) cout <<"+"<<a[i]<<"x^"<<n-i+1; else cout <<a[i]<<"x^"<<n-i+1; } } } //处理倒数第二位 if (a[n] != 0) { if(a[n]==1) cout <<"+x"; else if(a[n]==-1) cout <<"-x"; else{ if(a[n]>0) cout <<"+"<<a[n]<<"x"; else cout <<a[n]<<"x"; } } //处理倒数第一位 if (a[n+1]!=0) { if (a[n+1]>0) { cout <<"+"<< a[n+1]; } else { cout << a[n+1]; } } return 0; }