View Compilation Error

0_0_39106457_14033.cpp:28:54: error: 'n' was not declared in this scope
   28 | void update(int L,int R,int io,int p=1,int l=1,int r=n)
      |                                                      ^
0_0_39106457_14033.cpp: In function 'int main()':
0_0_39106457_14033.cpp:72:15: error: cannot convert 'const char*' to 'float'
   72 |         rintf("Test case #%d\nTotal exlored area: %.2f\n\n",++t,ans);
      |               ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
      |               |
      |               const char*
In file included from gcc-13.1.0/lib/gcc/x86_64-w64-mingw32/13.1.0/include/c++/cmath:47,
                 from .\stdc++.h:114:
gcc-13.1.0/x86_64-w64-mingw32/include/math.h:937:29: note:   initializing argument 1 of 'float rintf(float)'
  937 | extern float __cdecl rintf (float);
      |                             ^~~~~