/in/foo.cc: In function 'int main()':
/in/foo.cc:10:38: warning: unused variable 'x' [-Wunused-variable]
     int n,i,j,a[5500],m,c[5500],h,a2,x,y,z;
                                      ^
/in/foo.cc:10:40: warning: unused variable 'y' [-Wunused-variable]
     int n,i,j,a[5500],m,c[5500],h,a2,x,y,z;
                                        ^
/in/foo.cc:10:42: warning: unused variable 'z' [-Wunused-variable]
     int n,i,j,a[5500],m,c[5500],h,a2,x,y,z;
                                          ^