Eroare de compilare: user.cpp: In function ‘int main()’: user.cpp:76:18: error: ‘class deque<int>’ has no member named ‘empty’ if ( !dq.empty() ) ^ user.cpp:20:9: error: ‘deque<int>::node* deque<int>::back’ is private node *back; ^ user.cpp:78:33: error: within this context while ( a[i] < a[dq.back()] ) ^ user.cpp:78:38: error: expression cannot be used as a function while ( a[i] < a[dq.back()] ) ^ user.cpp:81:25: error: ‘class deque<int>’ has no member named ‘empty’ if ( dq.empty() ) break; ^ user.cpp:19:9: error: ‘deque<int>::node* deque<int>::front’ is private node *front; ^ user.cpp:86:17: error: within this context ans += a[dq.front()]; ^ user.cpp:86:23: error: expression cannot be used as a function ans += a[dq.front()]; ^ user.cpp:89:18: error: ‘class deque<int>’ has no member named ‘empty’ if ( !dq.empty() ) ^ user.cpp:19:9: error: ‘deque<int>::node* deque<int>::front’ is private node *front; ^ user.cpp:90:21: error: within this context if ( dq.front() <= i-k ) ^ user.cpp:90:27: error: expression cannot be used as a function if ( dq.front() <= i-k ) ^ user.cpp:92:18: error: ‘class deque<int>’ has no member named ‘empty’ if ( !dq.empty() ) ^ user.cpp:20:9: error: ‘deque<int>::node* deque<int>::back’ is private node *back; ^ user.cpp:94:33: error: within this context while ( a[i] < a[dq.back()] ) ^ user.cpp:94:38: error: expression cannot be used as a function while ( a[i] < a[dq.back()] ) ^ user.cpp:97:25: error: ‘class deque<int>’ has no member named ‘empty’