UVa 11292-Dragon of Loowater

/*
    《        -    》       1
       +  
     by  shuangde
*/
#include<cstdio>
#include<algorithm>
#define REP(i, n) for(int i=0; i<(n); ++i)
using namespace std;

const int MAXN = 20005;
int dia[MAXN],  cost[MAXN];

int main(){
    
    int n, m;
    while(~scanf("%d%d",&n,&m) && n+m){

        REP(i, n) scanf("%d", &dia[i]);
        REP(i, m) scanf("%d", &cost[i]);
        sort(dia, dia+n);
        sort(cost, cost+m);
        int ans=0, cur=0;
        REP(i, m) {
            if(dia[cur]<=cost[i]){
                ans += cost[i];
                ++cur;
            }
            if(cur == n) break;
        }
        if(cur == n){
            printf("%d
", ans);
        }
        else{
            puts("Loowater is doomed!");
        }
    }

    return 0;

}