View Compilation Error

0_0_39595502_4860.cpp: In function 'void solve()':
0_0_39595502_4860.cpp:48:17: error: 'n' was not declared in this scope
   48 |         rep(i,1,n) g[i].clear();
      |                 ^
0_0_39595502_4860.cpp:9:40: note: in definition of macro 'rep'
    9 | #define rep(i,x,y) for(reg int i=x;i<=(y);++i)
      |                                        ^
0_0_39595502_4860.cpp:49:17: error: 'n' was not declared in this scope
   49 |         rep(i,1,n) gx[i].clear();
      |                 ^
0_0_39595502_4860.cpp:9:40: note: in definition of macro 'rep'
    9 | #define rep(i,x,y) for(reg int i=x;i<=(y);++i)
      |                                        ^