Compilare: main.cpp: In function 'int mn(std::vector<int>&)': main.cpp:64:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 64 | for (int i = 1; i < nodes.size(); i++){ | ~~^~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:92:13: warning: variable 'm2' set but not used [-Wunused-but-set-variable] 92 | int m2 = 0; | ^~