Compilare: user.cpp: In function ‘int main()’: user.cpp:13:31: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("minim.in","r",stdin); ^ user.cpp:14:33: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("minim.out","w",stdout); ^ user.cpp:15:16: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&n); ^ user.cpp:16:57: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] for (int i=1;i<=n;i++) scanf("%d",&t[i].val),t[i].pos=i; ^ user.cpp:28:20: warning: ‘lung’ may be used uninitialized in this function [-Wmaybe-uninitialized] if (dp[i]==minn && lung>nu[i]) lung=nu[i],dr=t[i].pos; ^