Borderou de evaluare (job #328413)

Compilare: user.cpp: In function ‘void dfs(int, int)’: user.cpp:15:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp: In function ‘int bfs(int)’: user.cpp:26:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:24:14: warning: unused variable ‘ok’ [-Wunused-variable] user.cpp: In function ‘int main()’: user.cpp:39:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:40:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:42:26: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:45:28: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]