Compilare: user.cpp: In function ‘int Edmond()’: user.cpp:138:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0;j<G[nod].size();j++) ^ user.cpp:122:13: warning: unused variable ‘ok’ [-Wunused-variable] int i,j,ok=0,h=0,nod,u=1; ^ user.cpp:122:18: warning: unused variable ‘h’ [-Wunused-variable] int i,j,ok=0,h=0,nod,u=1; ^ user.cpp:122:26: warning: unused variable ‘u’ [-Wunused-variable] int i,j,ok=0,h=0,nod,u=1; ^ user.cpp: In function ‘void read()’: user.cpp:104:33: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("fmcm.in","r",stdin); ^ user.cpp:106:34: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d%d",&n,&m,&s,&d); ^ user.cpp:109:41: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d%d",&x,&y,&z,&cost); ^ user.cpp: In function ‘int main()’: user.cpp:191:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("fmcm.out","w",stdout); ^