#include<iostream>
#include<cstdio>
#include<cstring> 
#include<algorithm>
using namespace std;

int arr[20005];
int brr[20005];

int main(){
	int n,m;
	while(~scanf("%d%d",&n,&m)&&n&&m){
		for(int i=0;i<n;i++)	scanf("%d",&arr[i]);
		for(int i=0;i<m;i++) 	scanf("%d",&brr[i]);
		sort(arr,arr+n);
		sort(brr,brr+m);
		int cur=0;		//需要砍掉頭的編號	
		int cost=0;		//費用
		for(int i=0;i<m;i++)
			if(brr[i]>=arr[cur]){
				cost+=brr[i];
				if(++cur==n)	break;
			}
		if(cur>=n)
			cout<<cost<<endl;
		else
			cout<<"Loowater is doomed!"<<endl;
	}
	return 0;
}