Given $N integers A_1, ..., A_N, compute A_1 \times ... \times A_N$.
However, if the result exceeds 10^{18}, print -1 instead.

-----Constraints-----
- $2 \leq N \leq 10^5$
- $0 \leq A_i \leq 10^{18}$
- All values in input are integers.

-----Input-----
Input is given from Standard Input in the following format:
N
A_1 ... A_N

-----Output-----
Print the value $A_1 \times ... \times A_N$ as an integer, or -1 if the value exceeds 10^{18}.

-----Sample Input-----
2
1000000000 1000000000

-----Sample Output-----
1000000000000000000

We have $1000000000 \times 1000000000 = 1000000000000000000$.

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