Compilare: main.cpp: In function 'void check(int)': main.cpp:64:25: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 64 | for(int j = 0; j<cif.size(); j++) | ~^~~~~~~~~~~ main.cpp: In function 'bool cmp(const std::vector<int>&, const std::vector<int>&)': main.cpp:27:1: warning: control reaches end of non-void function [-Wreturn-type] 27 | } | ^