Compilare: user.cpp: In function ‘void Dfs(int)’: user.cpp:36:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<lista[nod].size(); i++) ^ user.cpp: In function ‘void TDfs(int)’: user.cpp:46:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<transp[nod].size(); i++) ^ user.cpp: In function ‘void back(int, int, int)’: user.cpp:58:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(k==coada.size()) ^ user.cpp:61:40: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<lista[nod].size(); i++) ^ user.cpp:65:42: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0; j<soll.size(); j++) ^ user.cpp:60:13: warning: unused variable ‘ok’ [-Wunused-variable] int ok=0; ^ user.cpp:71:40: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<lista[nod].size(); i++) ^ user.cpp: In function ‘int det()’: user.cpp:87:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<coada.size(); i++) ^ user.cpp: In function ‘int main()’: user.cpp:133:46: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0; j<sol[cont[i].ord].size(); j++) ^ user.cpp: In function ‘void citire()’: user.cpp:22:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("plimbare.in","r",stdin); ^ user.cpp:23:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("plimbare.out","w",stdout); ^ user.cpp:24:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&N); ^ user.cpp:27:29: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d",&x,&y); ^