uva11292 Dragon of Loowater (水题)

#include<iostream>
#include<algorithm>

int monster[20010];
int knights[20010];

using namespace std;

int main() {
	int x, y;
	cin >> x >> y;
	while (x!=0 || y!=0) {
		for (int i = 0; i < x; i++)
			cin>>monster[i];
		for (int i = 0; i < y; i++)
			cin >>knights[i];

		sort(monster,monster+x);
		sort(knights, knights + y);
		int cost = 0;
		int monsterPtr = 0;
		bool nag = false;
		for (int i = 0; i < y; i++) {
			if (monsterPtr > x-1) {
				goto end;
			}
			if (knights[i] >= monster[monsterPtr]) {
				monsterPtr++;
				cost += knights[i];
				if (monsterPtr == x) {
					cout << cost << endl;
					nag = true;
					goto end;
				}
			}
			
		}
	end:
		if (nag == false)
			cout << "Loowater is doomed!" << endl;
		cin >> x >> y;
	}
	return 0;
}