#include #include #include #include #include #include #include #include #include #include #include #include #include #include #include using namespace std; int sz = 1000000; void use_iostream() { ofstream f("cpp_player_out"); cout.rdbuf()->pubsetbuf(0, 0); ios_base::sync_with_stdio(false); for (int i = 0; i < sz; i++) cout << "Hi\n"; char s[10000]; for (int i = 0; i < sz; i++) { cin.getline(s, 10000); f << s << '\n'; } } int main() { use_iostream(); }