Compilare: main.cpp: In function 'int main()': main.cpp:131:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 131 | for(int i = 1; i < sol.size(); i++) | ~~^~~~~~~~~~~~ main.cpp:132:49: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 132 | for(int j = cost[sol[i - 1]][sol[i]]; j < cuv[sol[i]].size(); j++) | ~~^~~~~~~~~~~~~~~~~~~~