Compilare: user.cpp: In function ‘int main()’: user.cpp:74:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=0; i<candidati.size(); i++) ^ user.cpp:56:27: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d", &n, &m); ^ user.cpp:61:38: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d %d", &x, &y, &c); ^