/*               ????
??????         2010.11.24          */

int main()
{
	int n, count2, count1, i, j;
	int stop[30] = {0};
	int num[3000][30] = {0};
	cin >> n;
	count2  =0;
	while(count2 < n)//count2?????????????
	{
		cin >> stop[count2];
		count1 = 0;//count1?????????????
		while(count1 < stop[count2])
		{
			cin >> num[count2][count1];
			count1 ++;
		}
		count2 ++;
	}
	for(i = 0; i < n; i ++)
	{
		for(j = 0; j < stop[i]; j ++)
			if(num[i][j] + 3 * (j + 1) > 60)
				break;//????????
		if(j == stop[i])
			cout << 60 - 3 * stop[i];//?????????????
		else
		{
			if(num[i][j] + 3 * (j+1) > 63)
				cout << 60 - 3 * j;
			else//??????????????
				cout << num[i][j];//??????????
		}
		cout << endl;
	}
	return 0;
}
