View Compilation Error

0_0_23286490_24870.cpp: In function 'int query(int, int, int, int, int, int)':
0_0_23286490_24870.cpp:38:68: error: unable to find numeric literal operator 'operator""R'
  if(mid < R) ans += query(c[pre].rson, c[rt].rson, mid + 1, r, L,  98R);
                                                                    ^
0_0_23286490_24870.cpp:38:68: note: use -std=gnu++11 or -fext-numeric-literals to enable more built-in suffixes