#include <bits/stdc++.h>
using namespace std;

int main() {
	int n;
	scanf("%d", &n);

	int p,c,ans[n];
	for (int x = 0 ; x < n ; x++) {
		scanf("%d %d", &p, &c);

		int a[p];
		for (int i = 0 ; i < p ; i++) scanf("%d", &a[i]);

		int b[c],w = 0;
		for (int i = 0 ; i < c ; i++)
			if (w < p) b[i] = a[w++];

		int idle = 0;
		for (w ; w < p ; w++) {
			for (int i = 0 ; i < c ; i++) if (b[idle] > b[i]) idle = i;
			b[idle] += a[w];
		}

		idle = b[0];
		for (int i = 1 ; i < c ; i++)
			if (idle < b[i]) idle = b[i];
		ans[x] = idle;

	}

	for (int i = 0 ; i < n ; i++) printf("Case #%d : %d\n", i+1, ans[i]);


	return 0;
}