Function to split 1 to N into two subsequences with non - coprime sums
void printSubsequence ( int N ) { cout << " { ▁ " ; for ( int i = 1 ; i < N - 1 ; i ++ ) { cout << i << " , ▁ " ; } cout << N - 1 << " ▁ } STRNEWLINE " ; cout << " { ▁ " << N << " ▁ } " ; }