数学题

#include <bits/stdc++.h>

using namespace std;

#define ll long long
#define ld long double
#define inf 0x3f3f3f3f
#define endl '\n'

int n;
ll a[100007];
ll x[100007];

int main(){
	freopen("rain.in","r",stdin);
	freopen("rain.out","w",stdout);

	cin>>n;
	for(int i=1;i<=n;i++) cin>>a[i];
	
	ll p = 2*a[1];
	for(int i=2;i<=n;i++){
		if(i%2==0) p-=2*a[i];
		else p+=2*a[i];
	}
	p/=2; // x1
	x[1]=p;
	
	for(int i=2;i<=n;i++) x[i]=2*a[i-1]-x[i-1];
	for(int i=1;i<=n;i++) cout<<x[i]<<" ";

	return 0;
}