View Compilation Error

0_0_38752675_930.cpp: In function 'void solve()':
0_0_38752675_930.cpp:17:11: error: 'i' was not declared in this scope
   17 |     FORLL(i,0,n-1){
      |           ^
0_0_38752675_930.cpp:17:5: error: 'FORLL' was not declared in this scope
   17 |     FORLL(i,0,n-1){
      |     ^~~~~