Compilare: user.cpp: In function ‘int main()’: user.cpp:18:21: warning: unused variable ‘s’ [-Wunused-variable] int n, m, i, j, s, t, d, k, ma; ^ user.cpp:18:27: warning: unused variable ‘d’ [-Wunused-variable] int n, m, i, j, s, t, d, k, ma; ^ user.cpp:18:30: warning: unused variable ‘k’ [-Wunused-variable] int n, m, i, j, s, t, d, k, ma; ^ user.cpp:15:33: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("secv.in","r",stdin); ^ user.cpp:16:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("secv.out","w",stdout); ^ user.cpp:20:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&n); ^ user.cpp:22:28: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&v[ i ]); ^