/in/foo.cc: In function 'int main()':
/in/foo.cc:23:15: warning: format '%d' expects argument of type 'int*', but argument 2 has type 'long long int*' [-Wformat=]
  scanf("%d",&N);
               ^
/in/foo.cc:24:8: warning: unused variable 'j' [-Wunused-variable]
  int i,j;
        ^