Compilare: user.cpp: In function ‘void DFS(int, int, int, int)’: user.cpp:33:17: warning: unused variable ‘kost’ [-Wunused-variable] int kost = it->second; ^ user.cpp:34:17: warning: unused variable ‘kodes’ [-Wunused-variable] int kodes = nodes + 1; ^ user.cpp: In function ‘void Read()’: user.cpp:46:27: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d", &M, &N); ^ user.cpp:50:36: 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 ‘int main()’: user.cpp:57:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("ciclu.in", "r", stdin); ^ user.cpp:58:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("ciclu.out", "w", stdout); ^