#include <iostream>
using namespace std;
int main()
{
int n;
cin >> n;
long long sp[1000007];
int liczby[1000007];
sp[0] = 0;
for(int i = 1; i <= n; i++)
{
cin >> liczby[i];
}
for(int i = 1; i <= n; i++)
{
sp[i] = sp[i-1] + liczby[i];
cout << sp[i] << ' ';
}
cout << endl << sp[5] - sp[1];
return 0;
}
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