Compilare: main.cpp: In function 'int main()': main.cpp:72:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 72 | for (int i = 0; i < a.size(); i++) | ~~^~~~~~~~~~ main.cpp:74:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 74 | for (int i = 0; i < sol.size(); i++) | ~~^~~~~~~~~~~~ main.cpp: In function 'void DFSC(int)': main.cpp:100:10: warning: variable 'intrat' set but not used [-Wunused-but-set-variable] 100 | bool intrat = 0; | ^~~~~~