Compilare: main.cpp: In function 'int main()': main.cpp:24:25: warning: comparison of integer expressions of different signedness: 'std::deque<int>::size_type' {aka 'long unsigned int'} and '__gnu_cxx::__alloc_traits<std::allocator<int>, int>::value_type' {aka 'int'} [-Wsign-compare] 24 | if (qmin.size() == qmin.front()) qmin.pop_front(); | ~~~~~~~~~~~~^~~~~~~~~~~~~~~ main.cpp:31:25: warning: comparison of integer expressions of different signedness: 'std::deque<int>::size_type' {aka 'long unsigned int'} and '__gnu_cxx::__alloc_traits<std::allocator<int>, int>::value_type' {aka 'int'} [-Wsign-compare] 31 | if (qmax.size() == qmax.front()) qmax.pop_front(); | ~~~~~~~~~~~~^~~~~~~~~~~~~~~