Compilare: user.cpp: In function ‘void Dijkstra(int)’: user.cpp:49:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (j = 0; j < V[nod].size(); ++ j) ^ user.cpp: In function ‘void read()’: user.cpp:24:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("team.in", "r", stdin); ^ user.cpp:25:34: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d %d", &p, &n, &m); ^ user.cpp:29:38: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d %d", &x, &y, &c); ^ user.cpp: In function ‘void solve()’: user.cpp:94:30: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &home[i]); ^ user.cpp: In function ‘void write()’: user.cpp:101:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("team.out", "w", stdout); ^