Compilare: user.cpp: In function ‘int Dijkstra(int, int)’: user.cpp:47:12: warning: variable ‘v2’ set but not used [-Wunused-but-set-variable] int v1,v2,ul,nr2,i; ^ user.cpp: In function ‘int main()’: user.cpp:95:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("gard4.in","r",stdin); ^ user.cpp:96:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("gard4.out","w",stdout); ^ user.cpp:97:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&n); ^ user.cpp:103:29: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&v11); ^