Compilare: user.cpp: In function ‘int main()’: user.cpp:23:36: warning: unused variable ‘j’ [-Wunused-variable] int i,N,K1,K2,vf,x,y,aux1,aux2,j,t; ^ user.cpp:23:38: warning: unused variable ‘t’ [-Wunused-variable] int i,N,K1,K2,vf,x,y,aux1,aux2,j,t; ^ user.cpp:20:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("domino1.in","r",stdin); ^ user.cpp:21:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("domino1.out","w",stdout); ^ user.cpp:25:33: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d %d",&N,&K1,&K2); ^ user.cpp:28:29: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d",&x,&y); ^