Compilare: main.cpp: In function 'int main()': main.cpp:48:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 48 | for (int i = 1; i < v.size(); i++) { | ~~^~~~~~~~~~ main.cpp:53:9: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 53 | if (k > uniq.size()) { | ~~^~~~~~~~~~~~~ main.cpp: In function 'int fact(int)': main.cpp:17:10: warning: 'res' may be used uninitialized in this function [-Wmaybe-uninitialized] 17 | return res; | ^~~ main.cpp: In function 'int main()': main.cpp:26:3: warning: 'res' may be used uninitialized in this function [-Wmaybe-uninitialized] 26 | if (k > fact(n)) { | ^~