Compilare: main.cpp: In function 'int main()': main.cpp:62:22: warning: comparison of integer expressions of different signedness: 'std::deque<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 62 | if( q.size() == u ) { | ~~~~~~~~~^~~~ main.cpp:66:25: warning: comparison of integer expressions of different signedness: 'std::deque<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 66 | while( q.size() >= l && q.front() < 0 ) { | ~~~~~~~~~^~~~