Borderou de evaluare (job #70842)

Compilare: user.cpp: In function ‘int dfs(int, int)’: user.cpp:14:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:32:21: warning: unused variable ‘pp’ [-Wunused-variable] user.cpp:10:13: warning: unused variable ‘j’ [-Wunused-variable] user.cpp:45:1: warning: no return statement in function returning non-void [-Wreturn-type] user.cpp: In function ‘int main()’: user.cpp:49:13: warning: unused variable ‘k’ [-Wunused-variable] user.cpp:50:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:51:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:52:29: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:55:33: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:70:28: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]