Compilare: main.cpp: In function 'int main()': main.cpp:28:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 28 | for(int i = 0; i < mutari.size()-1; i++) { | ~~^~~~~~~~~~~~~~~~~ main.cpp:31:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 31 | for(int j = 0; j < mutari[i].size(); j++) out << mutari[i][j] << ' '; | ~~^~~~~~~~~~~~~~~~~~ main.cpp:30:7: warning: unused variable 'nr' [-Wunused-variable] 30 | int nr = INT_MAX; | ^~