Compilare: main.cpp: In function 'int main()': main.cpp:24:44: warning: comparison of integer expressions of different signedness: 'std::unordered_map<unsigned int, int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 24 | while (rgtl < n - 1 && mapl.size() < l) { | ~~~~~~~~~~~~^~~ main.cpp:28:25: warning: comparison of integer expressions of different signedness: 'std::unordered_map<unsigned int, int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 28 | if (mapl.size() < l) { | ~~~~~~~~~~~~^~~ main.cpp:32:44: warning: comparison of integer expressions of different signedness: 'std::unordered_map<unsigned int, int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 32 | while (rgtu < n - 1 && mapu.size() <= u) { | ~~~~~~~~~~~~^~~~ main.cpp:36:50: warning: comparison of integer expressions of different signedness: 'std::unordered_map<unsigned int, int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 36 | sol += 1LL * (rgtu - rgtl + (mapu.size() <= u)); | ~~~~~~~~~~~~^~~~