Borderou de evaluare (job #98789)

Compilare: user.cpp: In function ‘void dfs(int)’: user.cpp:12:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp: In function ‘int main()’: user.cpp:38:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:45:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:59:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:75:41: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:23:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:24:41: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:26:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:29:30: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:55:20: warning: ‘ind1’ may be used uninitialized in this function [-Wuninitialized]