Compilare: main.cpp: In function 'bool ok(double)': main.cpp:20:24: warning: comparison of integer expressions of different signedness: 'std::deque<double>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 20 | while(d.size() > u){ | ~~~~~~~~~^~~ main.cpp:24:24: warning: comparison of integer expressions of different signedness: 'std::deque<double>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 24 | while(d.size() > l && d.front() < 0){ | ~~~~~~~~~^~~