Compilare: user.cpp: In function ‘void DFS(int)’: user.cpp:15:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < v[nod].size(); ++i) ^ user.cpp: In function ‘void DFS1(int)’: user.cpp:28:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < v1[nod].size(); ++i) ^ user.cpp: In function ‘int main()’: user.cpp:80:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < sol.size(); ++i) printf("%d ",sol[i]); ^ user.cpp: In function ‘int getInt()’: user.cpp:45:62: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] if (++cnt >= buffer) fread(buff,buffer,1,stdin),cnt=0; ^ user.cpp:50:65: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] if (++cnt >= buffer) fread(buff,buffer,1,stdin),cnt=0; ^ user.cpp: In function ‘int main()’: user.cpp:59:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("drumuri5.in","r",stdin); ^ user.cpp:60:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("drumuri5.out","w",stdout); ^