/in/foo.c: In function 'main':
/in/foo.c:70:11: error: too many arguments to function 'Unique'
     nb1 = Unique(a1, n1, b1);
           ^~~~~~
/in/foo.c:42:5: note: declared here
 int Unique(int a[], int n)
     ^~~~~~
/in/foo.c:72:11: error: too many arguments to function 'Unique'
     nb2 = Unique(a2, n2, b2);
           ^~~~~~
/in/foo.c:42:5: note: declared here
 int Unique(int a[], int n)
     ^~~~~~