foo.cc: In function 'int main()':
foo.cc:30:30: warning: format '%lld' expects argument of type 'long long int*', but argument 2 has type 'int*' [-Wformat=]
 #define sc(a) scanf("%lld",&a)
                            ~~^~
 #define scc(a,b) scanf("%lld%lld",&a,&b)
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 #define sccc(a,b,c) scanf("%lld%lld%lld",&a,&b,&c)
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 using namespace std;
 ~~~~~~~~~~~~~~~~~~~~~         
 const int MAXN=1e6+5;
 ~~~~~~~~~~~~~~~~~~~~~~        
 const int MOD=1e9+7;
 ~~~~~~~~~~~~~~~~~~~~~         
 int n;
 ~~~~~~~                       
 ll ans;
 ~~~~~~~~                      
 ll llx[105],lly[105],urx[105],ury[105],x[205],y[205],xx[205],yy[205];
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 ll abss(ll x)
 ~~~~~~~~~~~~~~                
 {
 ~~                            
     if (x<0) return -x;
     ~~~~~~~~~~~~~~~~~~~~      
     return x;
     ~~~~~~~~~~                
 }
 ~~                            
 int main()
 ~~~~~~~~~~~                   
 {
 ~~                            
  sc(n);
  ~~~~                         
foo.cc:46:2: note: in expansion of macro 'sc'
  sc(n);
  ^~
foo.cc:30:20: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
 #define sc(a) scanf("%lld",&a)
               ~~~~~^~~~~~~~~~~
foo.cc:46:2: note: in expansion of macro 'sc'
  sc(n);
  ^~
foo.cc:50:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%lld%lld%lld%lld",&llx[i],&lly[i],&urx[i],&ury[i]);
   ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

自豪的采用HydroJudge(https://github.com/hydro-dev/Hydro)进行评测。