$ cargo run
Finished dev [unoptimized + debuginfo] target(s) in 0.03s
Running `target/debug/parallel_n_queens`
N Queens 4X4 Parallel & Recursive: 217.888µs
$ cargo run 10
Compiling parallel_n_queens v0.1.0 (.../parallel_n_queens)
Finished dev [unoptimized + debuginfo] target(s) in 1.21s
Running `target/debug/parallel_n_queens 10`
N Queens 10X10 Parallel & Recursive: 689.037576ms