/in/foo.cc: In function 'int main()':
/in/foo.cc:67:64: warning: format '%d' expects argument of type 'int', but argument 2 has type 'long long int' [-Wformat=]
     for(int i = 0  ; i < n ; ++ i) printf("%d\n" , A[n - i - 1]) ; 
                                                                ^