Compilare: user.cpp: In function ‘void adauga(ceva, int)’: user.cpp:56:7: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if(sol[x.nod]==0) //aici verific in loc de vector de viz ^ user.cpp: In function ‘int main()’: user.cpp:99:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<v[1].size();++i) ^ user.cpp:114:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<v[tmp1].size();++i) ^ user.cpp:89:24: warning: variable ‘cn’ set but not used [-Wunused-but-set-variable] int tmp1,tmp2,tmp3,cn; ^ user.cpp:86:32: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("apm.in","r",stdin); ^ user.cpp:87:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("apm.out","w",stdout); ^ user.cpp:91:29: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%lld %lld",&n,&m); ^ user.cpp:94:44: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d %d",&tmp1,&tmp2,&tmp3); ^