Borderou de evaluare (job #329096)

Compilare: user.cpp: In function ‘void DFS(int)’: user.cpp:18:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp: In function ‘void DFS2(int, int)’: user.cpp:31:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp: In function ‘int main()’: user.cpp:73:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:75:40: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:41:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:42:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:46:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:52:28: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]