game.cpp: In function 'void initialize(int)':
game.cpp:10:14: error: 'i' was not declared in this scope
10 | #define REP (i, a, b) for (int i = (a); i < (b); ++ i)
| ^
game.cpp:48:6: note: in expansion of macro 'REP'
48 | REP (i, 0, n)
| ^~~
game.cpp:10:17: error: 'a' was not declared in this scope
10 | #define REP (i, a, b) for (int i = (a); i < (b); ++ i)
| ^
game.cpp:48:6: note: in expansion of macro 'REP'
48 | REP (i, 0, n)
| ^~~
game.cpp:10:20: error: 'b' was not declared in this scope
10 | #define REP (i, a, b) for (int i = (a); i < (b); ++ i)
| ^
game.cpp:48:6: note: in expansion of macro 'REP'
48 | REP (i, 0, n)
| ^~~