Compilare: user.cpp: In function ‘int query(i64, i64)’: user.cpp:23:5: warning: this ‘if’ clause does not guard... [-Wmisleading-indentation] if (u == v) ^~ user.cpp:26:2: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the ‘if’ dq.clear(); ^~ user.cpp: In function ‘int main()’: user.cpp:47:9: warning: unused variable ‘ant’ [-Wunused-variable] int ant, op; ^~~