int main(){
    int n,m,i,xpy,stop;
    int js[21];
    scanf("%d",&n);
    int *a=(int *)malloc(sizeof(int)*(n+1));
    for(xpy=1;xpy<=n;xpy++){
		scanf("%d",&m);
		for(i=1;i<=m;i++){
			scanf("%d",&js[i]);
			}
		stop=0;
		for(i=1;i<=m;i++){
			if(js[i]+i*3<=60){
				stop+=3;
				}
			else if(js[i]+(i-1)*3<=60){
				stop+=60-js[i]-(i-1)*3;
				}
			else
			break;
			}
		a[xpy]=60-stop;
		}
	for(i=1;i<=n;i++){
	    printf("%d\n",a[i]);
	    }
	scanf("%d\n",&i);
	return 0;
	}