Compilare: main.cpp: In function 'std::vector<Sign> getDP(long long int, long long int, long long int, int)': main.cpp:82:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < r.size(); i++) ~~^~~~~~~~~~ main.cpp:103:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < r.size(); i++) ~~^~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:130:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < ans.size(); i++) ~~^~~~~~~~~~~~