Compilare: user.cpp: In function ‘void fill(short int, short int)’: user.cpp:27:25: warning: array subscript has type ‘char’ [-Wchar-subscripts] newx=cx+dx[k]; newy=cy+dy[k]; ^ user.cpp:27:40: warning: array subscript has type ‘char’ [-Wchar-subscripts] newx=cx+dx[k]; newy=cy+dy[k]; ^ user.cpp: In function ‘void read()’: user.cpp:12:31: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d %d",&n,&m,&Q); ^ user.cpp: In function ‘void solve()’: user.cpp:41:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&T); ^ user.cpp:44:51: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d %d %d %d",&x1,&y1,&x2,&y2,&q); ^ user.cpp: In function ‘int main()’: user.cpp:65:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("sahara.in","r",stdin); ^ user.cpp:66:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("sahara.out","w",stdout); ^