Compilare: main.cpp: In function 'int main()': main.cpp:89:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<muchie>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 89 | for(int i = 0; i<M.size();i++){ | ~^~~~~~~~~ main.cpp:96:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 96 | for(int j=0;j<indici[i].size();j++){ | ~^~~~~~~~~~~~~~~~~