Compilare: user.cpp: In function ‘void Solve()’: user.cpp:28:13: warning: unused variable ‘best’ [-Wunused-variable] int best = INF; ^ user.cpp: In function ‘void Reconst()’: user.cpp:89:16: warning: unused variable ‘j’ [-Wunused-variable] int i = N ,j = N; ^ user.cpp: In function ‘void Read()’: user.cpp:17:29: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d\n%s",&N,A + 1); ^ user.cpp: In function ‘int main()’: user.cpp:112:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("harddp.in","r",stdin); ^ user.cpp:113:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("harddp.out","w",stdout); ^ user.cpp:116:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&T); ^