int main()
{
	int n,i,j;
	struct{
		int m,x[10],t[10],s;            //t???s?60?????
	}a[100];
	scanf("%d",&n);
	for(i=0; i<n; i++)
	{
		scanf("%d",&a[i].m);
		for(j=0; j<a[i].m; j++)
			scanf("%d",&a[i].x[j]);
	}

	for(i=0; i<n; i++)
	{
		if(a[i].m==0)
		{
			a[i].s=60;
			printf("%d\n",a[i].s);
		}
		else
		{
			if(a[i].x[a[i].m-1]+a[i].m*3<=60)
			{
				a[i].s=60-3*a[i].m;
				printf("%d\n",a[i].s);
			}
			else
			{
				for(j=a[i].m-1; a[i].x[j]+(j+1)*3>=60; j--){}  //j=4
				if(a[i].x[j+1]+3*(j+1)>=57 && a[i].x[j+1]+3*(j+1)<=60)
					printf("%d\n",a[i].x[j+1]);
				else{
                    a[i].s=60-3*(j+1);
				    printf("%d\n",a[i].s);
				}
			}
		}
	}
	return 0;
}
