View Compilation Error

0_0_39114257_30360.cpp: In function 'int main()':
0_0_39114257_30360.cpp:5:11: error: 'Read' was not declared in this scope
    5 | #define R Read()
      |           ^~~~
0_0_39114257_30360.cpp:117:13: note: in expansion of macro 'R'
  117 |         n = R ;
      |             ^