Compilare: user.cpp: In function ‘int main()’: user.cpp:96:53: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for ( int j = 0 ; j < v[aux[i].pozitie].size(); ++ j) ^ user.cpp: In function ‘void Input()’: user.cpp:41:32: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] {freopen("retele.in","r",stdin); ^ user.cpp:42:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&n,&m); ^ user.cpp:46:29: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&x ,&y); ^ user.cpp: In function ‘int main()’: user.cpp:69:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] { freopen("retele.out","w",stdout); ^