#include <iostream>
#include <vector>
#include <string>
#include <iomanip>
#include <queue>
#include <cmath>
#include <algorithm>
#include <tuple>
#include <iomanip>
#include <stdio.h>
#include <numeric>
#include <map>
#include <bitset>
#include <set>
#include <stack>
#include <queue>

/*
#pragma GCC optimize("Ofast,no-stack-protector")
#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,avx2,tune=native")
#pragma GCC optimize("unroll-loops")
#pragma GCC optimize("fast-math")
#pragma GCC optimize("section-anchors")
#pragma GCC optimize("profile-values,profile-reorder-functions,tracer")
#pragma GCC optimize("vpt")
#pragma GCC optimize("rename-registers")
#pragma GCC optimize("move-loop-invariants")
#pragma GCC optimize("unswitch-loops")
#pragma GCC optimize("function-sections")
#pragma GCC optimize("data-sections")
#pragma GCC optimize("branch-target-load-optimize")
#pragma GCC optimize("branch-target-load-optimize2")
#pragma GCC optimize("btr-bb-exclusive")
*/

//#define int long long
#define ll long long
#define ull unsigned long long
#define all(a) a.begin(), a.end()
#define pii pair<int, int>
#define pb push_back
#define ld long double


using namespace std;

//const int INF = 1e13;
//const int mod = 2600000069;
//const int p = 179;

signed main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    int n, m, l;
    cin >> n >> m >> l;
    multiset<int, greater<int>> a;
    set<int> was;
    vector<int> b(m);
    int x;
    for (int i = 0; i < n; i++) {
        cin >> x;
        a.insert(x);
    }
    for (int i = 0; i < m; i++) {
        cin >> b[i];
        if (was.count(b[i])) continue;
        was.insert(b[i]);
        auto it = a.lower_bound(b[i]);
        if (it == a.end()) {
            cout << i;
            return 0;
        }
//        cout << *it << "\n";
        if (l < b[i] - *it) {
            cout << i;
            return 0;
        }
        l -= b[i] - *it;
//        cout << a.size() << "\n";
        a.erase(it);
    }
    cout << m;
}
/*
 6 8 179
 4 9 23 15 43 7
 3 10 14 7 3 8 7 3
 -> 0

 5 8 5
 5 3 8 14 1
 10 7 3 7 12 3 3 6
 -> 4

 2 2 4
 6 13
 8 10
 -> 1
*/