Compilare: main.cpp: In function 'std::vector<int> solve(const std::vector<int>&)': main.cpp:10:25: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 10 | for(int i = 0;i < v.size();++i) | ~~^~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:55:33: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 55 | for(int i = 0;i < ans.size();++i) | ~~^~~~~~~~~~~~