#include <iostream>#include <cstdio> #include <algorithm>usingnamespacestd;
constint maxn = 20010;
int n, m, p, res, ok;
int a[maxn], b[maxn];
int main(){
while(scanf("%d%d", &n, &m) && n+m){
ok = 0, p = 1, res = 0;
for(int i = 1; i <= n; i ++) scanf("%d", &a[i]);
for(int i = 1; i <= m; i ++) scanf("%d", &b[i]);
sort(a+1, a+1+n), sort(b+1, b+1+m);
b[m+1] = 0x7fffffff;
for(int i = 1; i <= n; i ++){
while(a[i] > b[p]) p ++;
if(p > m){
printf("Loowater is doomed!\n"), ok = 1;
break;
}
res += b[p ++];
}
if(!ok) printf("%d\n", res);
}
return0;
}