#include <bits/stdc++.h> using namespace std; #define endl "\n" #define int long long #define pii pair<int, int> #define ff first #define ss second #define entire(x) (x).begin(), (x).end() const int inf = 1e16; int32_t main(){ ios::sync_with_stdio(false); cin.tie(nullptr); int n; cin >> n; vector<pii> a(n); for (int i = 0; i < n; i++) cin >> a[i].ss; for (int i = 0; i < n; i++) cin >> a[i].ff; sort(entire(a)); vector<int> dp(n+1, inf); dp[0] = 0; for (auto [lim, gain] : a){ vector<int> dpnew(n+1, inf); dpnew[0] = 0; for (int i = 0; i < n; i++){ if (dp[i] > lim) continue; dpnew[i+1] = min(dp[i+1], dp[i] + gain); } dp = dpnew; } int ans = 0; for (int i = 1; i <= n; i++){ if (dp[i] >= inf) break; ans++; } cout << ans << endl; return 0; }