#include <vector>
#include <iostream>

using namespace std;

int main() {
	vector<int> a(10);
	int first = -1, second = -1;
	for (int i = 0; i < 10; ++i) {
		cin >> a[i];
		if (a[i] > 0) {
			if (first == -1) first = i; else second = i;
		}
	}
	if ((a[second] - a[first]) % (second - first) != 0) {
		cout << -1 << endl;
	} else {
		int d = (a[second] - a[first]) / (second - first);
		for (int i = 0; i < 10; ++i) {
			cout << a[first] + (i - first) * d;
			if (i < 9) cout << " ";
		}
		cout << endl;
	}
}