Compilare: user.cpp: In function ‘void df(int, int)’: user.cpp:24:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<m2[nod].size();i++) ^ user.cpp: In function ‘void complete(int)’: user.cpp:34:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<m[nod].size();i++) ^ user.cpp: In function ‘int tryme(int)’: user.cpp:52:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0;j<m2[i].size();j++) m[i].push_back(m2[i][j]); ^ user.cpp: In function ‘int main()’: user.cpp:77:11: warning: unused variable ‘j’ [-Wunused-variable] int i,j,nod,st,drpt,ok,rez,mid; ^ user.cpp:77:25: warning: variable ‘ok’ set but not used [-Wunused-but-set-variable] int i,j,nod,st,drpt,ok,rez,mid; ^ user.cpp:78:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("rege2.in","r",stdin); ^ user.cpp:79:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("rege2.out","w",stdout); ^ user.cpp:80:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&t); ^ user.cpp:84:28: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&n,&s); ^ user.cpp:89:49: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d",&dr.nod,&nod,&dr.cst); ^