#pragma GCC optimize("Ofast")
#pragma GCC target("avx2")

main(){
	char*mmap();
	char*rp=mmap(0l,1l<<25,1,2,0,0ll);
	while(*rp=='A'){
		rp+=3;
	}
	if(*rp){
		write(1,"Failed...",9);
	}else{
		write(1,"Done!",5);
	}
	_exit(0);
}