Compilare: user.cpp: In function ‘void solve()’: user.cpp:109:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=1; i<solutie.size(); i++) ^ user.cpp: In function ‘void read()’: user.cpp:43:27: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d", &n, &m); ^ user.cpp:48:31: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d", &x, &y); ^