Borderou de evaluare (job #414448)

Compilare: user.cpp: In function ‘void dfs(int)’: user.cpp:13:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp: In function ‘void bfs(int)’: user.cpp:23:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp: In function ‘int main()’: user.cpp:56:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:57:39: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:60:39: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:35:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:36:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:38:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:40:28: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]