Compilare: main.cpp: In function 'int main()': main.cpp:43:13: warning: unused variable 'maxx' [-Wunused-variable] 43 | int maxx=0; | ^~~~ main.cpp:79:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 79 | for(int i=0;i<sol.size();i++) | ~^~~~~~~~~~~