Compilare: user.cpp: In function ‘void dfs(int, int, bool, bool)’: user.cpp:44:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (pass9==1 && nivele.size()<nivel) ^ user.cpp: In function ‘int main()’: user.cpp:129:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("autobuze3.in","r",stdin); ^ user.cpp:130:40: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("autobuze3.out","w",stdout); ^ user.cpp:132:21: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d\n",&t); ^ user.cpp:136:31: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d\n",&n,&m); ^ user.cpp:140:41: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d %d\n",&a,&b,&c); ^