cc1plus: error: '::main' must return 'int'
/in/foo.cc: In function 'int main()':
/in/foo.cc:20:17: warning: format '%d' expects argument of type 'int*', but argument 2 has type 'long long int*' [-Wformat=]
   20 |         scanf("%d%d",&l,&r);
      |                ~^    ~~
      |                 |    |
      |                 int* long long int*
      |                %lld
/in/foo.cc:20:19: warning: format '%d' expects argument of type 'int*', but argument 3 has type 'long long int*' [-Wformat=]
   20 |         scanf("%d%d",&l,&r);
      |                  ~^     ~~
      |                   |     |
      |                   int*  long long int*
      |                  %lld