Compilare: user.cpp: In function ‘void startDfs(long int, long int)’: user.cpp:82:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(long i=0;i<list[nod].size();i++){ ^ user.cpp: In function ‘long int getLCA(long int, long int)’: user.cpp:116:19: warning: suggest parentheses around ‘-’ inside ‘<<’ [-Wparentheses] for(long pas=1<<maxLog-2;pas;pas>>=1,pasL--){ ^ user.cpp: In function ‘long int getLong()’: user.cpp:25:39: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(Buff,1,maxBuf,stdin); ^ user.cpp:33:39: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(Buff,1,maxBuf,stdin); ^ user.cpp: In function ‘int main()’: user.cpp:143:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("disconnect.in","r",stdin); ^ user.cpp:144:41: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("disconnect.out","w",stdout); ^ user.cpp:145:31: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(Buff,1,maxBuf,stdin); ^