Compilare: user.cpp: In function ‘int main()’: user.cpp:55:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0;j<a[st[i].p].size();j++) ^ user.cpp:29:13: warning: unused variable ‘poz’ [-Wunused-variable] int i,j,poz,jj; ^ user.cpp:29:17: warning: unused variable ‘jj’ [-Wunused-variable] int i,j,poz,jj; ^ user.cpp:30:35: 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:31:37: 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); ^ user.cpp:32:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&n,&m); ^ user.cpp:34:28: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&i,&j); ^