Eroare de compilare: main.cpp: In function 'std::vector<int> multiply(const std::vector<int>&, const std::vector<int>&)': main.cpp:51:12: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 51 | while (n < a.size() + b.size()) { | ~~^~~~~~~~~~~~~~~~~~~~~ main.cpp: In function 'void testCase()': main.cpp:86:19: error: 'max_element' was not declared in this scope 86 | vector<int> fa(*max_element(a.begin(), a.end()) + 1); | ^~~~~~~~~~~ Non zero exit status: 1