Make Them Similar

1257F2400· grandmaster4s1024 MB⌨ stdin/stdout

#bitmasks #brute force #hashing #meet-in-the-middle

Examples

Sample 1of 4

Input

2
7 2

Output

Sample 2of 4

Input

4
3 17 6 0

Output

Sample 3of 4

Input

3
1 2 3

Output

-1

Sample 4of 4

Input

3
43 12 12

Output

1073709057

1257F.cpp

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Ln 11·137 BGNU C++20 (64)