문제
링크
풀이
#include <algorithm>
#include <iostream>
#include <vector>
using namespace std;
bool solve(void) {
int n, l; cin >> n >> l;
vector<int> a(n), b(n);
for (int i=0; i<n; i++) cin >> a[i];
for (int i=0; i<n; i++) cin >> b[i];
sort(a.begin(), a.end());
sort(b.begin(), b.end(), greater<int>());
int ans = 0;
for (int i=0; i<l; i++) {
ans += a[i] - b[i];
}
return ans > 0;
}
int main(void) {
ios::sync_with_stdio(false);
cin.tie(nullptr);
int t; cin >> t;
while (t--) cout << (solve() ? "YES" : "NO") << "\n";
return 0;
}