Compilare: user.cpp: In function ‘void solve(std::string, std::string, std::vector<int>&)’: user.cpp:13:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 2; i < s.size(); i ++) { ^ user.cpp:41:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = st_poz; i < s.size(); i ++) { ^ user.cpp: In function ‘int main(int, const char**)’: user.cpp:69:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (str.size() < len) { ^ user.cpp: In function ‘void solve(std::string, std::string, std::vector<int>&)’: user.cpp:41:26: warning: ‘st_poz’ may be used uninitialized in this function [-Wmaybe-uninitialized] for (int i = st_poz; i < s.size(); i ++) { ^