#include <iostream>
#include <vector>
using namespace std;
int main() {
int n, k = 0;
cin >> n;
vector<int> a(n);
for (int i = 0; i < n; ++i) {
cin >> a[i];
}
for (int i = 0; i < n; ++i) {
k += a[i];
if (k == 0) {
cout << "- ";
}
else {
cout << "+ ";
}
--k;
}
if (k > 0) {
while (k > 0) {
cout << "+ ";
--k;
}
}
return 0;
}
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