Eroare de compilare: user.cpp: In function ‘int main()’: user.cpp:38:38: error: ‘v’ was not declared in this scope while (!dq.empty() && 1.0 * (v[i].first - v[dq.back()].first) / (v[i].second - v[dq.back()].second) <= 1.0 * (v[i].first - v[i - l].first) / (v[i].second - v[i - l].second)) dq.pop_back(); ^ user.cpp:41:27: error: ‘v’ was not declared in this scope s = max(s, 1.0 * (v[i].first - v[dq.front()].first) / (v[i].second - v[dq.front()].second)); ^