Compilare: main.cpp: In function 'void f()': main.cpp:47:77: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%lld%lld%lld%lld%lld%lld%lld\n",&ii[2],&ii[1],&ii[0],&a,&b,&c,&n); ^ main.cpp: In function 'int main()': main.cpp:71:38: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("iepuri.in","r",stdin); ^ main.cpp:72:40: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("iepuri.out","w",stdout); ^ main.cpp:74:19: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&t); ^