/in/foo.cc:4:64: error: 'LONG_LONG_MAX' was not declared in this scope
 long long n,m,dr[1000010],i,now,maxn,node,sum[1000010],l,r,MIN=LONG_LONG_MAX,mid,f,day[1000010];
                                                                ^~~~~~~~~~~~~
/in/foo.cc: In function 'int comp(int)':
/in/foo.cc:11:8: error: 'f' was not declared in this scope
   if(x>f)
        ^
/in/foo.cc:14:4: error: 'day' was not declared in this scope
    day[p[i].b]-=p[i].d;
    ^~~
/in/foo.cc:20:4: error: 'day' was not declared in this scope
    day[p[i].b]+=p[i].d;
    ^~~
/in/foo.cc:23:3: error: 'f' was not declared in this scope
   f=x;
   ^
/in/foo.cc:26:21: error: 'day' was not declared in this scope
     sum[i]=sum[i-1]+day[i];
                     ^~~
/in/foo.cc: In function 'int main()':
/in/foo.cc:49:5: error: 'mid' was not declared in this scope
     mid=(l+r)/2;
     ^~~