Compilare: main.cpp: In function 'std::vector<int> build(int, std::vector<Search>&)': main.cpp:16:33: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<Search>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 16 | for(int j = 0;j < v.size();++j) | ~~^~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:71:41: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 71 | for(int i = 0;i < ans.size() - 1;++i) | ~~^~~~~~~~~~~~~~~~