View Compilation Error

0_0_39520129_3434.cpp: In function 'void solve()':
0_0_39520129_3434.cpp:158:24: error: 'i' was not declared in this scope
  158 |         while (cur < Q[i].x)
      |                        ^
0_0_39520129_3434.cpp:167:15: error: 'i' was not declared in this scope
  167 |         ans[Q[i].id] = tr.query(l[Q[i].rt], r[Q[i].rt]);
      |               ^