#include <iostream>
using namespace std;
 
const int MAX_LENGTH = 100;
 
int main() {
	int n, omega[MAX_LENGTH + 1], alpha[MAX_LENGTH + 1];
	cin >> n;
	for (int i = 1; i <= n; ++i) {
		cin >> omega[i];
	}
	int aux = 0;
	for (int i = 1; i <= n; ++i) {
		if (i == 1) {
			alpha[i] = omega[i];
			cout << alpha[i] <<" ";
		} else {
			alpha[i] = omega[i] - alpha[i - 1];
 
			//cout << alpha[i] <<"<-";
			if (alpha[i] < 0) {
				aux = alpha[i] * -1;
				cout << aux  <<" ";
			} else {
				cout << alpha[i] <<" ";
			}
		}
	}
	return 0;
}

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