#include <bits/stdc++.h>

using namespace std;
/*
5
100 -1 1 -3 0 10
*/
int main() {
    int n;
    cin >> n;
    int a;
    for (int i = 0; i < n; i++) {
        cin >> a;
        if (a > 0) {
            if (i > 0) cout << "+";
            if (a > 1) {
                if (n - i == 1)
                    cout << a << "x";
                else
                    cout << a << "x^" << n - i;
            } else {
                if (n - i == 1)
                    cout << "x";
                else
                    cout << "x^" << n - i;
            }

        } else if (a < 0) {
            if (a == -1) {
                if (n - i == 1)
                    cout << "-x";
                else
                    cout << "-x^" << n - i;
            } else {
                if (n - i == 1)
                    cout << a << "x";
                else
                    cout << a << "x^" << n - i;
            }
        }
    }
    cin >> a;
    if (a > 0)
        cout << "+" << a << endl;
    else
        cout << a << endl;
    return 0;
}