Compilare: user.cpp: In function ‘int main()’: user.cpp:71:9: warning: unused variable ‘t’ [-Wunused-variable] int t,x,y,i,p,j; ^ user.cpp:71:11: warning: unused variable ‘x’ [-Wunused-variable] int t,x,y,i,p,j; ^ user.cpp:71:13: warning: unused variable ‘y’ [-Wunused-variable] int t,x,y,i,p,j; ^ user.cpp:71:17: warning: unused variable ‘p’ [-Wunused-variable] int t,x,y,i,p,j; ^ user.cpp:71:19: warning: unused variable ‘j’ [-Wunused-variable] int t,x,y,i,p,j; ^ user.cpp: In function ‘void read()’: user.cpp:35:21: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%lld",&n); ^ user.cpp:37:25: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%lld",&x); ^ user.cpp: In function ‘int main()’: user.cpp:72:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("biscuiti.in","r",stdin); ^ user.cpp:73:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("biscuiti.out","w",stdout); ^