Compilare: user.cpp: In function ‘void stergere(int, int)’: user.cpp:35:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<g[k].size(); i++) ^ user.cpp: In function ‘void c_euler()’: user.cpp:42:11: warning: variable ‘k’ set but not used [-Wunused-but-set-variable] int x,k; ^ user.cpp: In function ‘void afisare()’: user.cpp:66:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<sol.size();i++) ^ user.cpp: In function ‘void citire()’: user.cpp:18:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("ciclueuler.in","r",stdin); ^ user.cpp:19:25: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d",&n,&m); ^ user.cpp:23:29: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d",&a,&b); ^ user.cpp: In function ‘void afisare()’: user.cpp:64:41: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("ciclueuler.out","w",stdout); ^