Eroare de compilare: user.cpp: In function ‘int main()’: user.cpp:74:49: error: cannot pass objects of non-trivially-copyable type ‘class std::vector<int>’ through ‘...’ if(l[i]) printf("%d %d\n",i,v[l[i]-1]); ^ user.cpp:74:50: warning: format ‘%d’ expects argument of type ‘int’, but argument 3 has type ‘std::vector<int>’ [-Wformat=] if(l[i]) printf("%d %d\n",i,v[l[i]-1]); ^ user.cpp:22:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("concurs2.in","r",stdin); ^ user.cpp:23:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("concurs2.out","w",stdout); ^ user.cpp:24:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&n); ^ user.cpp:27:28: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&x,&y); ^