Compilare: main.cpp: In function 'void solve()': main.cpp:50:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::deque<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 50 | for (int k = 0; k < dq.size(); k++) { | ~~^~~~~~~~~~~ main.cpp:49:7: warning: unused variable 'ind' [-Wunused-variable] 49 | int ind = 1, last = 0; | ^~~