Compilare: main.cpp: In function 'int main()': main.cpp:29:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 29 | for ( j = 0; j < fact[v[i]].size(); ++j ) | ~~^~~~~~~~~~~~~~~~~~~ main.cpp:32:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 32 | for ( j = 0; j < fact[v[i]].size(); ++j ) | ~~^~~~~~~~~~~~~~~~~~~ main.cpp:25:18: warning: variable 'poz' set but not used [-Wunused-but-set-variable] 25 | int sol = 0, poz; | ^~~