Compilare: user.cpp: In function ‘int main()’: user.cpp:38:22: warning: variable ‘x’ set but not used [-Wunused-but-set-variable] int j,n,m,i,q,qq,x,y,mx; ^ user.cpp:38:24: warning: variable ‘y’ set but not used [-Wunused-but-set-variable] int j,n,m,i,q,qq,x,y,mx; ^ user.cpp:36:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("cerc3.in", "r", stdin); ^ user.cpp:37:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("cerc3.out", "w", stdout); ^ user.cpp:42:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &n); ^ user.cpp:44:53: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d %d", &v[i].x, &v[i].y, &v[i].r); ^