Compilare: main.cpp: In function 'int main()': main.cpp:42:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<muchie>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 42 | for(int j=0;j<M.size();j++){ | ~^~~~~~~~~ main.cpp:59:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<muchie>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 59 | for(int j=0;j<aux.size();j++){ | ~^~~~~~~~~~~ main.cpp:38:15: warning: unused variable 'mn' [-Wunused-variable] 38 | float mn=1e9; | ^~