/in/foo.cc: In function 'int main()':
/in/foo.cc:5:40: warning: unused variable 'z' [-Wunused-variable]
  int N,Q,a[100001],b[100001],c[100001],z,x,g,v,sum=0;
                                        ^
/in/foo.cc:5:42: warning: unused variable 'x' [-Wunused-variable]
  int N,Q,a[100001],b[100001],c[100001],z,x,g,v,sum=0;
                                          ^