Compilare: main.cpp: In function 'int div(int, std::vector<int>&)': main.cpp:29:1: warning: no return statement in function returning non-void [-Wreturn-type] 29 | } | ^ main.cpp: In function 'void backontrack(int, int, int)': main.cpp:37:10: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 37 | if(p == v.size()) | ~~^~~~~~~~~~~