/in/foo.cc: In function 'int main()':
/in/foo.cc:102:20: warning: 'y' may be used uninitialized in this function [-Wmaybe-uninitialized]
     n=move(n,x,y,0);
                    ^
/in/foo.cc:102:20: warning: 'x' may be used uninitialized in this function [-Wmaybe-uninitialized]