Compilare: main.cpp: In function 'int main()': main.cpp:22:66: warning: comparison of integer expressions of different signedness: 'std::deque<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 22 | while (!dq.empty() and v[dq.back()] < v[i] and dq.size() >= k) | ~~~~~~~~~~^~~~ main.cpp:25:23: warning: comparison of integer expressions of different signedness: 'std::deque<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 25 | if (dq.size() >= k) | ~~~~~~~~~~^~~~ main.cpp:35:32: warning: 'dr' may be used uninitialized in this function [-Wmaybe-uninitialized] 35 | cout << st << ' ' << dr << " " << ans; | ^~~ main.cpp:35:19: warning: 'st' may be used uninitialized in this function [-Wmaybe-uninitialized] 35 | cout << st << ' ' << dr << " " << ans; | ^~~