int arr[] = { 23, 37, 41, 55, 64, 75, 83, 99, 101 };
	int t;
	cin >> t;
	int low = 0, high = sizeof(arr) / sizeof(arr[0]);
	int mid = 0;
	while (low <= high)
	{
		mid = (low + high) / 2;
		if (arr[mid] > t)
		{
			cout << "比t大\n";
			high = mid;
		}
		else if (arr[mid] == t)
		{
			cout << "找到了, 第 " << mid + 1 << " 个\n";
			break;
		}
		else
		{
			cout << "比t小\n";
			low = mid;
		}
	}