Compilare: main.cpp: In function 'void bkt(int, int)': main.cpp:29:15: warning: unused variable 'aux' [-Wunused-variable] int i,a=0,aux; ^~~ main.cpp: In function 'int main()': main.cpp:47:35: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("mario2.in","r",stdin); ^ main.cpp:48:37: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("mario2.out","w",stdout); ^ main.cpp:50:42: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d%d",&high,&poz,&hmax,&n); ^ main.cpp:53:48: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d",&v[i].h,&v[i].x,&v[i].y); ^